id int32 | image image | Question string | Answer string | content string | label int32 |
|---|---|---|---|---|---|
3,281 | In the Bi 4f spectra shown in Figure (a), what is the approximate binding energy (in eV) of the highest-intensity peak observed in all samples? | approximately 158.8 eV | Caption: Figure 2: XPS spectra of pristine and degraded electrodes.
Description: (a) Bi 4f, (b) O 1sand V 2pcore levels of pristine (black) and degraded at pH 6.8 (red) and pH 12.3 (blue) BiVO4samples compared with FTO (dashed grey). | 0 | |
3,282 | In the FTO dashed spectrum, is the peak position shifted toward higher or lower binding energy compared to the O 1s main peak of the pH 12.3 sample? | Tending toward higher binding energy | Caption: Figure 2: XPS spectra of pristine and degraded electrodes.
Description: (a) Bi 4f, (b) O 1sand V 2pcore levels of pristine (black) and degraded at pH 6.8 (red) and pH 12.3 (blue) BiVO4samples compared with FTO (dashed grey). | 1 | |
3,283 | Which element’s photoelectron energy levels correspond to the two peaks at approximately 516 eV and 524 eV? | V 2p | Caption: Figure 2: XPS spectra of pristine and degraded electrodes.
Description: (a) Bi 4f, (b) O 1sand V 2pcore levels of pristine (black) and degraded at pH 6.8 (red) and pH 12.3 (blue) BiVO4samples compared with FTO (dashed grey). | 0 | |
3,284 | Comparing Figure a and Figure b, which spectrum shows more pronounced changes in both shape and relative intensity with varying pH? | Figure b | Caption: Figure 2: XPS spectra of pristine and degraded electrodes.
Description: (a) Bi 4f, (b) O 1sand V 2pcore levels of pristine (black) and degraded at pH 6.8 (red) and pH 12.3 (blue) BiVO4samples compared with FTO (dashed grey). | 1 | |
3,285 | Which sample is represented by the black solid line? | Pristine | Caption: Figure 2: XPS spectra of pristine and degraded electrodes.
Description: (a) Bi 4f, (b) O 1sand V 2pcore levels of pristine (black) and degraded at pH 6.8 (red) and pH 12.3 (blue) BiVO4samples compared with FTO (dashed grey). | 0 | |
3,291 | In the enlarged view of the H22 signal, what is the labeled chemical shift (ppm) for this signal? | 6.40 ppm | Caption: Fig. 2: 1D1H NMR spectra of microgram amount of strychnine in gels.
Description:
c. 1D1H NMR spectrum of 10-μg strychnine acquired with 8192 scans in deuterated PMMA gel under maximum alignment condition. For clarity, expansions for some of the proton signals (H4, H22, H8, and H20a) are also shown. | 0 | |
3,292 | Are the splitting patterns of H4 and H20a, in terms of peak shapes and counts, similar? | Yes | Caption: Fig. 2: 1D1H NMR spectra of microgram amount of strychnine in gels.
Description:
c. 1D1H NMR spectrum of 10-μg strychnine acquired with 8192 scans in deuterated PMMA gel under maximum alignment condition. For clarity, expansions for some of the proton signals (H4, H22, H8, and H20a) are also shown. | 1 | |
3,293 | In the four enlarged signal plots arranged from left to right at the top, what is the name of the signal corresponding to the third plot? | H8 | Caption: Fig. 2: 1D1H NMR spectra of microgram amount of strychnine in gels.
Description:
c. 1D1H NMR spectrum of 10-μg strychnine acquired with 8192 scans in deuterated PMMA gel under maximum alignment condition. For clarity, expansions for some of the proton signals (H4, H22, H8, and H20a) are also shown. | 0 | |
3,294 | How many local magnified views are included in panel c? | 4 | Caption: Fig. 2: 1D1H NMR spectra of microgram amount of strychnine in gels.
Description:
c. 1D1H NMR spectrum of 10-μg strychnine acquired with 8192 scans in deuterated PMMA gel under maximum alignment condition. For clarity, expansions for some of the proton signals (H4, H22, H8, and H20a) are also shown. | 1 | |
3,295 | Among the labeled signals, which one has the highest chemical shift value? | H4 | Caption: Fig. 2: 1D1H NMR spectra of microgram amount of strychnine in gels.
Description:
c. 1D1H NMR spectrum of 10-μg strychnine acquired with 8192 scans in deuterated PMMA gel under maximum alignment condition. For clarity, expansions for some of the proton signals (H4, H22, H8, and H20a) are also shown. | 0 | |
3,296 | Among curves I, II, III, and Shake up, which curve corresponds to the highest peak intensity? | Curve I | Caption: Fig. 3
Description: XPS Characterizations.aXPS spectrum of1for Cu 2p (brown) with three fitting peaksI–III(Cu(I): yellow; Cu(I)′: blue; Cu(II): green).bXPS of2for Cu 2p signal | 0 | |
3,297 | Question: Among the three main fitted peaks (I, II, III), which one has the binding energy at the intermediate value?
Answer: Peak II. | Peak II | Caption: Fig. 3
Description: XPS Characterizations.aXPS spectrum of1for Cu 2p (brown) with three fitting peaksI–III(Cu(I): yellow; Cu(I)′: blue; Cu(II): green).bXPS of2for Cu 2p signal | 0 | |
3,298 | What is the signal peak located at approximately 943 eV called? | Shake up | Caption: Fig. 3
Description: XPS Characterizations.aXPS spectrum of1for Cu 2p (brown) with three fitting peaksI–III(Cu(I): yellow; Cu(I)′: blue; Cu(II): green).bXPS of2for Cu 2p signal | 0 | |
3,299 | Which compound (Complex 1 or Complex 2) exhibits a higher main peak binding energy? | Complex 2 | Caption: Fig. 3
Description: XPS Characterizations.aXPS spectrum of1for Cu 2p (brown) with three fitting peaksI–III(Cu(I): yellow; Cu(I)′: blue; Cu(II): green).bXPS of2for Cu 2p signal | 1 | |
3,300 | What are the units of the horizontal axis and the vertical axis in panel b, respectively? | Horizontal axis: eV; Vertical axis: Counts/10^3 s | Caption: Fig. 3
Description: XPS Characterizations.aXPS spectrum of1for Cu 2p (brown) with three fitting peaksI–III(Cu(I): yellow; Cu(I)′: blue; Cu(II): green).bXPS of2for Cu 2p signal | 0 | |
3,301 | In the powder XRD pattern shown in subfigure c, what is the approximate 2θ value corresponding to the labeled (100) diffraction peak? | ≈25.3° | Caption: Fig. 2: Characterization of Mn-DTA MOF.
Description: c. Powder XRD pattern of Mn-DTA (MnS, JCPDS No, 89-4089). | 0 | |
3,302 | What is the Miller index of the crystal plane corresponding to the strongest diffraction peak in subfigure c? | It is (100) | Caption: Fig. 2: Characterization of Mn-DTA MOF.
Description: c. Powder XRD pattern of Mn-DTA (MnS, JCPDS No, 89-4089). | 0 | |
3,303 | In the 2θ range of 20° to 30°, how many diffraction peaks are indicated by the JCPDS reference pattern (the vertical lines below)? | five | Caption: Fig. 2: Characterization of Mn-DTA MOF.
Description: c. Powder XRD pattern of Mn-DTA (MnS, JCPDS No, 89-4089). | 1 | |
3,304 | Which of the diffraction peaks at (102) and (110) exhibits lower intensity? | (102) lower | Caption: Fig. 2: Characterization of Mn-DTA MOF.
Description: c. Powder XRD pattern of Mn-DTA (MnS, JCPDS No, 89-4089). | 1 | |
3,305 | What is the number of the standard card used as a reference? | JCPDS No.89-4089 | Caption: Fig. 2: Characterization of Mn-DTA MOF.
Description: c. Powder XRD pattern of Mn-DTA (MnS, JCPDS No, 89-4089). | 0 | |
3,306 | What is the wavenumber at the center of the strong absorption peak located between 1500 cm⁻¹ and 1000 cm⁻¹? | 1433 cm⁻¹ | Caption: Fig. 5: The in situ dynamic evolution of carboxyl ligand.
Description:
b. In situ FTIR spectroscopy measurements on SU-NiFe-LDH(TA)@cp sample at different applied potentials. | 0 | |
3,307 | How does the intensity of the absorption peak at 1608 cm⁻¹ change as the applied voltage increases from 0.0 V to 3.0 V? | Intensity enhancement | Caption: Fig. 5: The in situ dynamic evolution of carboxyl ligand.
Description:
b. In situ FTIR spectroscopy measurements on SU-NiFe-LDH(TA)@cp sample at different applied potentials. | 1 | |
3,308 | Which three substances or states do the top three spectral curves (red, blue, and gray) correspond to, respectively? | TANa、TA、Membrane | Caption: Fig. 5: The in situ dynamic evolution of carboxyl ligand.
Description:
b. In situ FTIR spectroscopy measurements on SU-NiFe-LDH(TA)@cp sample at different applied potentials. | 0 | |
3,309 | How many independent spectral curves are contained in the variable-voltage spectral sequence from 0.0 V to 3.0 V? | 12 | Caption: Fig. 5: The in situ dynamic evolution of carboxyl ligand.
Description:
b. In situ FTIR spectroscopy measurements on SU-NiFe-LDH(TA)@cp sample at different applied potentials. | 1 | |
3,310 | In subfigure (b), is the horizontal axis (Wavenumber/cm⁻¹) continuous? | It is discontinuous, exhibiting a break at approximately 1750 cm⁻¹. | Caption: Fig. 5: The in situ dynamic evolution of carboxyl ligand.
Description:
b. In situ FTIR spectroscopy measurements on SU-NiFe-LDH(TA)@cp sample at different applied potentials. | 0 | |
3,311 | In the upper subplot, what is the annotated mass-to-charge ratio (m/z) difference between adjacent main peaks? | 607 Da, 608 Da, and 650 Da | Caption: Figure 1: Determination of the MPIase structure.
Description: (b, top) MALDI–TOF MS spectrum of MPIase in the negative mode. Subdivided peaks differing in 42 mass units reflect variation ofO-acetyl groups. (Bottom) The MS/MS spectrum fromm/z608 in the positive mode contained fragment peaks comprising combinati... | 0 | |
3,312 | What is the mass difference indicated in parentheses in the inset of the upper panel? | 42 Da | Caption: Figure 1: Determination of the MPIase structure.
Description: (b, top) MALDI–TOF MS spectrum of MPIase in the negative mode. Subdivided peaks differing in 42 mass units reflect variation ofO-acetyl groups. (Bottom) The MS/MS spectrum fromm/z608 in the positive mode contained fragment peaks comprising combinati... | 0 | |
3,313 | In the lower subpanel, what are the masses of the fragments indicated by the bidirectional arrows? | 218 Da、203 Da、187 Da | Caption: Figure 1: Determination of the MPIase structure.
Description: (b, top) MALDI–TOF MS spectrum of MPIase in the negative mode. Subdivided peaks differing in 42 mass units reflect variation ofO-acetyl groups. (Bottom) The MS/MS spectrum fromm/z608 in the positive mode contained fragment peaks comprising combinati... | 0 | |
3,314 | In the MS/MS spectrum below, what is the mass-to-charge ratio (m/z) of the selected precursor ion? | 608 | Caption: Figure 1: Determination of the MPIase structure.
Description: (b, top) MALDI–TOF MS spectrum of MPIase in the negative mode. Subdivided peaks differing in 42 mass units reflect variation ofO-acetyl groups. (Bottom) The MS/MS spectrum fromm/z608 in the positive mode contained fragment peaks comprising combinati... | 0 | |
3,315 | In the mass spectrum above, what is the mass-to-charge ratio (m/z) of the signal peak with the highest intensity (Intens.)? | 5614 | Caption: Figure 1: Determination of the MPIase structure.
Description: (b, top) MALDI–TOF MS spectrum of MPIase in the negative mode. Subdivided peaks differing in 42 mass units reflect variation ofO-acetyl groups. (Bottom) The MS/MS spectrum fromm/z608 in the positive mode contained fragment peaks comprising combinati... | 0 | |
3,316 | At approximately which wavelength is the characteristic peak marked by the vertical dashed line located? | approximately 275 nm | Caption: Fig. 2: Two representative recent studies from other research groups that directly support our conclusions.
Description:
c. In-situ UV-vis study of CuPc under electrochemical CO2 reduction conditions. Adapted with permission from Ref.5. | 0 | |
3,317 | Among the three spectra at the bottom, which one exhibits the lowest absorbance at 400 nm? | Pc | Caption: Fig. 2: Two representative recent studies from other research groups that directly support our conclusions.
Description:
c. In-situ UV-vis study of CuPc under electrochemical CO2 reduction conditions. Adapted with permission from Ref.5. | 0 | |
3,318 | As the applied voltage was varied from –0.54 V to –1.14 V, how did the intensity of the absorption peak at approximately 325 nm change? | gradually decreases | Caption: Fig. 2: Two representative recent studies from other research groups that directly support our conclusions.
Description:
c. In-situ UV-vis study of CuPc under electrochemical CO2 reduction conditions. Adapted with permission from Ref.5. | 1 | |
3,319 | How many spectral curves measured under specific negative voltage conditions are displayed in the figure? | 7 | Caption: Fig. 2: Two representative recent studies from other research groups that directly support our conclusions.
Description:
c. In-situ UV-vis study of CuPc under electrochemical CO2 reduction conditions. Adapted with permission from Ref.5. | 1 | |
3,320 | What is the absorbance (Abs) value represented by the scale bar? | 0.2 Abs | Caption: Fig. 2: Two representative recent studies from other research groups that directly support our conclusions.
Description:
c. In-situ UV-vis study of CuPc under electrochemical CO2 reduction conditions. Adapted with permission from Ref.5. | 0 | |
3,321 | In the illustration, what is the Miller index of the diffraction peak marked by the dashed line? | It is 110. | Caption: Figure 1: In-plane chemical ordering of (Mo2/3Sc1/3)2AlC leading to Mo1.33C MXene with ordered divacancies.
Description:
(e) Rietveld refinement of XRD of sample with nominal composition (Mo2/3Sc1/3)2AlC assuming same space group as above. (f) XRD pattern of (Mo2/3Sc1/3)2AlC before (black), after HF etching ... | 0 | |
3,322 | Which sample has the maximum d-spacing value at a 2θ angle of approximately 10°? | Mo₁.₃₃C-HF-TBAOH | Caption: Figure 1: In-plane chemical ordering of (Mo2/3Sc1/3)2AlC leading to Mo1.33C MXene with ordered divacancies.
Description:
(e) Rietveld refinement of XRD of sample with nominal composition (Mo2/3Sc1/3)2AlC assuming same space group as above. (f) XRD pattern of (Mo2/3Sc1/3)2AlC before (black), after HF etching ... | 0 | |
3,323 | Comparing the four curves in Figure f, which sample exhibits the broadest diffraction peak in the 2θ range of 5° to 15°? | d-Mo₁.₃₃CTₓ, "paper" | Caption: Figure 1: In-plane chemical ordering of (Mo2/3Sc1/3)2AlC leading to Mo1.33C MXene with ordered divacancies.
Description:
(e) Rietveld refinement of XRD of sample with nominal composition (Mo2/3Sc1/3)2AlC assuming same space group as above. (f) XRD pattern of (Mo2/3Sc1/3)2AlC before (black), after HF etching ... | 0 | |
3,324 | What is the d-spacing value corresponding to the most intense diffraction peak of the Mo₁.₃₃CTₓ-HF sample? | 19.4 Å | Caption: Figure 1: In-plane chemical ordering of (Mo2/3Sc1/3)2AlC leading to Mo1.33C MXene with ordered divacancies.
Description:
(e) Rietveld refinement of XRD of sample with nominal composition (Mo2/3Sc1/3)2AlC assuming same space group as above. (f) XRD pattern of (Mo2/3Sc1/3)2AlC before (black), after HF etching ... | 0 | |
3,325 | In the legend of Figure e, how many impurity phases are listed in addition to the primary phase (Mo₂/₃Sc₁/₃)₂AlC? | Three types | Caption: Figure 1: In-plane chemical ordering of (Mo2/3Sc1/3)2AlC leading to Mo1.33C MXene with ordered divacancies.
Description:
(e) Rietveld refinement of XRD of sample with nominal composition (Mo2/3Sc1/3)2AlC assuming same space group as above. (f) XRD pattern of (Mo2/3Sc1/3)2AlC before (black), after HF etching ... | 1 | |
3,331 | In Figure a, how many samples’ XPS spectra are presented in total? | 11 | Caption: Figure 4: XPS analysis of increasingly oxidized graphite.
Description: (a) HO and (b) HU method. The increasing level of oxidation of graphite is represented by the loss of C–C character and the introduction of oxygen functionality. HU materials show a higher degree of carboxylic functionality compared to HO c... | 1 | |
3,332 | For sample GO-HU5, into how many distinct peaks was its C 1s spectrum deconvoluted (fitted)? | three | Caption: Figure 4: XPS analysis of increasingly oxidized graphite.
Description: (a) HO and (b) HU method. The increasing level of oxidation of graphite is represented by the loss of C–C character and the introduction of oxygen functionality. HU materials show a higher degree of carboxylic functionality compared to HO c... | 1 | |
3,333 | How does the shape of the main peak at approximately 284.5 eV evolve from GO-HO1 to GO-HO55? | Gradually broadens and decreases in height. | Caption: Figure 4: XPS analysis of increasingly oxidized graphite.
Description: (a) HO and (b) HU method. The increasing level of oxidation of graphite is represented by the loss of C–C character and the introduction of oxygen functionality. HU materials show a higher degree of carboxylic functionality compared to HO c... | 1 | |
3,334 | Which sample’s spectral line first exhibits a distinct split peak or shoulder near 288 eV? | GO-HO15 | Caption: Figure 4: XPS analysis of increasingly oxidized graphite.
Description: (a) HO and (b) HU method. The increasing level of oxidation of graphite is represented by the loss of C–C character and the introduction of oxygen functionality. HU materials show a higher degree of carboxylic functionality compared to HO c... | 0 | |
3,335 | Question: In the GO-HU10 spectrum, which fitted peak—the one with the highest intensity or the one with the lowest intensity—is located at a higher binding energy (B.E.) position?
Answer: The fitted peak with the lowest intensity is located at a higher binding energy position. | the peak with the lowest intensity | Caption: Figure 4: XPS analysis of increasingly oxidized graphite.
Description: (a) HO and (b) HU method. The increasing level of oxidation of graphite is represented by the loss of C–C character and the introduction of oxygen functionality. HU materials show a higher degree of carboxylic functionality compared to HO c... | 1 | |
3,336 | In the above experiment, what is the ratio of the enolic form to the keto form? | It is 2.5:1. | Caption: Fig. 5: Mechanistic studies of the reactivity of the cycloisomerization.
Description: a. 1H NMR studies of a mixture of1band (R)-CPA. | 1 | |
3,337 | After the addition of (R)-CPA, does the relative content of the keto isomer increase or decrease? | increased | Caption: Fig. 5: Mechanistic studies of the reactivity of the cycloisomerization.
Description: a. 1H NMR studies of a mixture of1band (R)-CPA. | 1 | |
3,338 | What is the ratio of the number of Ha to Hb? | It is 2:1. | Caption: Fig. 5: Mechanistic studies of the reactivity of the cycloisomerization.
Description: a. 1H NMR studies of a mixture of1band (R)-CPA. | 1 | |
3,339 | In the brown trace, comparing the two signals Ha and Hb, which one has the smaller chemical shift? | Ha | Caption: Fig. 5: Mechanistic studies of the reactivity of the cycloisomerization.
Description: a. 1H NMR studies of a mixture of1band (R)-CPA. | 1 | |
3,340 | Which of the two Ha signals in the figure—in the brown line or the cyan line—exhibits the simpler splitting pattern? | Cyan line | Caption: Fig. 5: Mechanistic studies of the reactivity of the cycloisomerization.
Description: a. 1H NMR studies of a mixture of1band (R)-CPA. | 1 | |
3,351 | In all subpanels, which two sub-peaks constitute the G band? | G− and G+ | Caption: Figure 2: Raman spectroscopy of t(m+n)LG.
Description: Stokes/anti-Stokes Raman spectra in the C peak region and Stokes spectra in the G and 2D spectral regions for four t(m+n)LGs. For comparison, the 2D peaks in SLG and Bernal-stacked BLG are plotted using dotted lines. The fits show that the G band of each t... | 0 | |
3,352 | In the second spectrum, which of the two peaks, C₃₁ or C₃₂, has the greater intensity? | C₃₁ | Caption: Figure 2: Raman spectroscopy of t(m+n)LG.
Description: Stokes/anti-Stokes Raman spectra in the C peak region and Stokes spectra in the G and 2D spectral regions for four t(m+n)LGs. For comparison, the 2D peaks in SLG and Bernal-stacked BLG are plotted using dotted lines. The fits show that the G band of each t... | 1 | |
3,353 | In the negative Raman shift region, which spectrum’s signal intensity has been amplified by the greatest factor? | Green and violet spectra | Caption: Figure 2: Raman spectroscopy of t(m+n)LG.
Description: Stokes/anti-Stokes Raman spectra in the C peak region and Stokes spectra in the G and 2D spectral regions for four t(m+n)LGs. For comparison, the 2D peaks in SLG and Bernal-stacked BLG are plotted using dotted lines. The fits show that the G band of each t... | 0 | |
3,354 | How many distinct t(m+n)LG spectral curves are presented in this composite figure? | Four lines | Caption: Figure 2: Raman spectroscopy of t(m+n)LG.
Description: Stokes/anti-Stokes Raman spectra in the C peak region and Stokes spectra in the G and 2D spectral regions for four t(m+n)LGs. For comparison, the 2D peaks in SLG and Bernal-stacked BLG are plotted using dotted lines. The fits show that the G band of each t... | 1 | |
3,355 | In which colored spectrum does the characteristic peak labeled C₂₁ exhibit the lowest intensity? | The topmost is cyan-blue. | Caption: Figure 2: Raman spectroscopy of t(m+n)LG.
Description: Stokes/anti-Stokes Raman spectra in the C peak region and Stokes spectra in the G and 2D spectral regions for four t(m+n)LGs. For comparison, the 2D peaks in SLG and Bernal-stacked BLG are plotted using dotted lines. The fits show that the G band of each t... | 0 | |
3,356 | In the spectrum, among the two signal peaks with chemical shifts between 20 and 25 ppm, which one exhibits the higher intensity? | Signal peak at approximately 23.5 ppm | Caption: Fig. 5
Description: The methyl group carbon C25 arises from C2 of acetate. Comparison of13C NMR spectra for2isolated after growth in the presence of [1,2-13C2] sodium acetate. Integration of the13C NMR spectra confirmed weak enrichment of the13C isotope and the absence of coupling to any adjacent carbon atom. ... | 1 | |
3,357 | Which two carbon atoms correspond to the 44.58 Hz coupling constant? | C1 and C24 | Caption: Fig. 5
Description: The methyl group carbon C25 arises from C2 of acetate. Comparison of13C NMR spectra for2isolated after growth in the presence of [1,2-13C2] sodium acetate. Integration of the13C NMR spectra confirmed weak enrichment of the13C isotope and the absence of coupling to any adjacent carbon atom. ... | 0 | |
3,358 | What is the peak shape of the C24 signal in the above spectrum? | triplet peak | Caption: Fig. 5
Description: The methyl group carbon C25 arises from C2 of acetate. Comparison of13C NMR spectra for2isolated after growth in the presence of [1,2-13C2] sodium acetate. Integration of the13C NMR spectra confirmed weak enrichment of the13C isotope and the absence of coupling to any adjacent carbon atom. ... | 0 | |
3,359 | At approximately which chemical shift value (ppm) does the break in the horizontal axis occur? | Between 27 ppm and 138 ppm | Caption: Fig. 5
Description: The methyl group carbon C25 arises from C2 of acetate. Comparison of13C NMR spectra for2isolated after growth in the presence of [1,2-13C2] sodium acetate. Integration of the13C NMR spectra confirmed weak enrichment of the13C isotope and the absence of coupling to any adjacent carbon atom. ... | 0 | |
3,360 | In the cyan spectrum, are the splitting patterns of the C1 and C24 signals identical? | Yes | Caption: Fig. 5
Description: The methyl group carbon C25 arises from C2 of acetate. Comparison of13C NMR spectra for2isolated after growth in the presence of [1,2-13C2] sodium acetate. Integration of the13C NMR spectra confirmed weak enrichment of the13C isotope and the absence of coupling to any adjacent carbon atom. ... | 1 | |
3,361 | In subfigure a, at approximately which wavelength is the maximum absorption peak (λmax) of the blue curve located? | Approximately 470 nm | Caption: Fig. 8
Description: Reflective UV-VIS spectroscopy on UHMW-PE and LD-PE.aThe Kubelka–Munk, normalized at max. reflection, for non-treated (untreated material), PDC without the plasma treatment step (PDC without plasma), and a PDC-treated (PDC) sample of fibrous UHMW-PE/DR1-A, performed under following PDC cond... | 0 | |
3,362 | In subfigure b, what is the approximate maximum absorption intensity (Kubelka–Munk value) of the PDC curve? | approximately 0.26 | Caption: Fig. 8
Description: Reflective UV-VIS spectroscopy on UHMW-PE and LD-PE.aThe Kubelka–Munk, normalized at max. reflection, for non-treated (untreated material), PDC without the plasma treatment step (PDC without plasma), and a PDC-treated (PDC) sample of fibrous UHMW-PE/DR1-A, performed under following PDC cond... | 0 | |
3,363 | For the “PDC without plasma” sample, on which substrate material is its absorption stronger in the 400–500 nm range? | UHMW-PE | Caption: Fig. 8
Description: Reflective UV-VIS spectroscopy on UHMW-PE and LD-PE.aThe Kubelka–Munk, normalized at max. reflection, for non-treated (untreated material), PDC without the plasma treatment step (PDC without plasma), and a PDC-treated (PDC) sample of fibrous UHMW-PE/DR1-A, performed under following PDC cond... | 1 | |
3,364 | In Figure b, beyond approximately which wavelength (nm) do the absorption values of all three materials approach zero? | 650 nm | Caption: Fig. 8
Description: Reflective UV-VIS spectroscopy on UHMW-PE and LD-PE.aThe Kubelka–Munk, normalized at max. reflection, for non-treated (untreated material), PDC without the plasma treatment step (PDC without plasma), and a PDC-treated (PDC) sample of fibrous UHMW-PE/DR1-A, performed under following PDC cond... | 0 | |
3,365 | What substrate material is represented in Figure b? |
LD-PE/DR1-A | Caption: Fig. 8
Description: Reflective UV-VIS spectroscopy on UHMW-PE and LD-PE.aThe Kubelka–Munk, normalized at max. reflection, for non-treated (untreated material), PDC without the plasma treatment step (PDC without plasma), and a PDC-treated (PDC) sample of fibrous UHMW-PE/DR1-A, performed under following PDC cond... | 0 | |
3,366 | Which substance is responsible for the diffraction peak observed between diffraction angles of 45° and 50° in the bottommost sample? | Si | Caption: Fig. 4: Influence of lithiation on chemical composition of nanowires.
Description:
c. X-ray diffractograms for pSiNs and LipSiNs showing peaks associated with crystalline Si, lithium silicates and amorphous phases within LipSiNs. | 0 | |
3,367 | Comparing the orange and blue spectra, which sample exhibits a higher degree of crystallinity (provide the chemical formula)? | LipSi-4% | Caption: Fig. 4: Influence of lithiation on chemical composition of nanowires.
Description:
c. X-ray diffractograms for pSiNs and LipSiNs showing peaks associated with crystalline Si, lithium silicates and amorphous phases within LipSiNs. | 1 | |
3,368 | How many Si peaks are indicated by the vertical dashed lines? | 3 | Caption: Fig. 4: Influence of lithiation on chemical composition of nanowires.
Description:
c. X-ray diffractograms for pSiNs and LipSiNs showing peaks associated with crystalline Si, lithium silicates and amorphous phases within LipSiNs. | 1 | |
3,369 | Question: In the XRD pattern of LipSi-40%, the diffraction peak at approximately 33° is attributed to which phase? (Provide the chemical formula.) | Li₂Si₂O3 | Caption: Fig. 4: Influence of lithiation on chemical composition of nanowires.
Description:
c. X-ray diffractograms for pSiNs and LipSiNs showing peaks associated with crystalline Si, lithium silicates and amorphous phases within LipSiNs. | 0 | |
3,370 | In which sample’s diffraction pattern does the most pronounced “amorphous hump” appear? | LipSi-1.3% | Caption: Fig. 4: Influence of lithiation on chemical composition of nanowires.
Description:
c. X-ray diffractograms for pSiNs and LipSiNs showing peaks associated with crystalline Si, lithium silicates and amorphous phases within LipSiNs. | 0 | |
3,376 | What is the approximate intensity ratio of the signal peaks at m/z 328 and m/z 330? | approximately 1:1 | Caption: Fig. 3: Photoionization mass spectra.
Description: Comparison of mass spectra taken at a photon energy of 9.00 eV.aBromocorannulene (C20H9Br) – helium (He) system;bbromocorannulene (C20H9Br) – vinylacetylene (C4H4) system at a reactor temperature of 1200 ± 100 K. The mass peaks of the newly formed C24H12(m/z= ... | 1 | |
3,377 | In subfigure b, among the cluster of peaks in the m/z 249–251 range, which m/z value corresponds to the most intense peak? | 250 | Caption: Fig. 3: Photoionization mass spectra.
Description: Comparison of mass spectra taken at a photon energy of 9.00 eV.aBromocorannulene (C20H9Br) – helium (He) system;bbromocorannulene (C20H9Br) – vinylacetylene (C4H4) system at a reactor temperature of 1200 ± 100 K. The mass peaks of the newly formed C24H12(m/z= ... | 0 | |
3,378 | In subfigure b, what are the m/z values of the signal peak marked in red and its isotopic peak, respectively? | 300 and 301 | Caption: Fig. 3: Photoionization mass spectra.
Description: Comparison of mass spectra taken at a photon energy of 9.00 eV.aBromocorannulene (C20H9Br) – helium (He) system;bbromocorannulene (C20H9Br) – vinylacetylene (C4H4) system at a reactor temperature of 1200 ± 100 K. The mass peaks of the newly formed C24H12(m/z= ... | 0 | |
3,379 | Into how many peaks is the red portion split? | Two | Caption: Fig. 3: Photoionization mass spectra.
Description: Comparison of mass spectra taken at a photon energy of 9.00 eV.aBromocorannulene (C20H9Br) – helium (He) system;bbromocorannulene (C20H9Br) – vinylacetylene (C4H4) system at a reactor temperature of 1200 ± 100 K. The mass peaks of the newly formed C24H12(m/z= ... | 1 | |
3,380 | How many signal peaks in Figure b are explicitly labeled with their m/z values? | eight | Caption: Fig. 3: Photoionization mass spectra.
Description: Comparison of mass spectra taken at a photon energy of 9.00 eV.aBromocorannulene (C20H9Br) – helium (He) system;bbromocorannulene (C20H9Br) – vinylacetylene (C4H4) system at a reactor temperature of 1200 ± 100 K. The mass peaks of the newly formed C24H12(m/z= ... | 1 | |
3,381 | In the emission spectrum of Py1, at approximately which wavelength (nm) does the peak with the highest intensity appear? | Approximately 475 nm | Caption: Fig. 2: Photophysical properties and theoretical calculation of perylene derivatives.
Description:
a. Normalized UV-vis absorption (abs) and fluorescence emission (em) spectra of Py1-Py4 in toluene. | 0 | |
3,382 | Question: In the chart below, which compound, Py2 or Py4, exhibits a more red-shifted peak wavelength in its emission spectrum?
Answer: Py4 exhibits a more red-shifted emission peak wavelength. | Py2 | Caption: Fig. 2: Photophysical properties and theoretical calculation of perylene derivatives.
Description:
a. Normalized UV-vis absorption (abs) and fluorescence emission (em) spectra of Py1-Py4 in toluene. | 1 | |
3,383 | In the above figure, do the absorption spectra of Py1 and Py3 essentially overlap in both their shape and spectral position? | Yes | Caption: Fig. 2: Photophysical properties and theoretical calculation of perylene derivatives.
Description:
a. Normalized UV-vis absorption (abs) and fluorescence emission (em) spectra of Py1-Py4 in toluene. | 1 | |
3,384 | In the figure below, beyond approximately which wavelength (nm) does the absorption spectrum of Py4 essentially decrease to zero intensity? | Approximately 470 nm | Caption: Fig. 2: Photophysical properties and theoretical calculation of perylene derivatives.
Description:
a. Normalized UV-vis absorption (abs) and fluorescence emission (em) spectra of Py1-Py4 in toluene. | 0 | |
3,385 | For the Py2 sample, what is the approximate wavelength difference in nanometers between the longest-wavelength absorption peak in the absorption spectrum and the shortest-wavelength emission peak in the emission spectrum? | approximately 30 nm | Caption: Fig. 2: Photophysical properties and theoretical calculation of perylene derivatives.
Description:
a. Normalized UV-vis absorption (abs) and fluorescence emission (em) spectra of Py1-Py4 in toluene. | 1 | |
3,386 | Are the experimental data and the fitted data essentially fully coincident? | Yes | Caption: Figure 4: XRD pattern and crystalline structure.
Description:
(a) XRD profile of CS-COF (red curve), the Pawley-refined pattern (green curve) and their difference (black curve). XRD patterns were simulated using the P1 space group with the 0.8-Å-slipped AA-stacking mode (blue curve). | 1 | |
3,387 | Compared with the simulated spectrum at the bottom, what characteristics do the peak shapes of the experimental spectrum at the top exhibit? | The peak width is significantly broader. | Caption: Figure 4: XRD pattern and crystalline structure.
Description:
(a) XRD profile of CS-COF (red curve), the Pawley-refined pattern (green curve) and their difference (black curve). XRD patterns were simulated using the P1 space group with the 0.8-Å-slipped AA-stacking mode (blue curve). | 0 | |
3,388 | In the top spectrum, what is the Miller index assigned to the weaker diffraction peak located at approximately 25 degrees? | 001 | Caption: Figure 4: XRD pattern and crystalline structure.
Description:
(a) XRD profile of CS-COF (red curve), the Pawley-refined pattern (green curve) and their difference (black curve). XRD patterns were simulated using the P1 space group with the 0.8-Å-slipped AA-stacking mode (blue curve). | 0 | |
3,389 | How many distinct spectral regions does subfigure a contain in the vertical direction? | 3 | Caption: Figure 4: XRD pattern and crystalline structure.
Description:
(a) XRD profile of CS-COF (red curve), the Pawley-refined pattern (green curve) and their difference (black curve). XRD patterns were simulated using the P1 space group with the 0.8-Å-slipped AA-stacking mode (blue curve). | 1 | |
3,390 | At approximately which 2θ angles (degrees) do the largest positive peak and the largest negative peak in the black curve occur? | Approximately 5 degrees | Caption: Figure 4: XRD pattern and crystalline structure.
Description:
(a) XRD profile of CS-COF (red curve), the Pawley-refined pattern (green curve) and their difference (black curve). XRD patterns were simulated using the P1 space group with the 0.8-Å-slipped AA-stacking mode (blue curve). | 0 | |
3,391 | In subfigure (c), the sharp absorption peak at approximately 3370 cm⁻¹ is assigned to which vibrational mode of NH₃? | ν₃(NH₃) | Caption: Fig. 1: Infrared (IR) spectra of treated and untreated montmorillonite samples with ammonia.
Description: In-situ infrared (IR) spectra of (a) commercial montmorillonite, (b) natural montmorillonite, and (c) ammonia (NH3) ice on a silver substrate at 5 K. IR spectra of ammonia deposited on the surface of comme... | 0 | |
3,392 | Which sample exhibits the sharpest and strongest single-peak absorption at approximately 3300 cm⁻¹? | NH₃-Silver | Caption: Fig. 1: Infrared (IR) spectra of treated and untreated montmorillonite samples with ammonia.
Description: In-situ infrared (IR) spectra of (a) commercial montmorillonite, (b) natural montmorillonite, and (c) ammonia (NH3) ice on a silver substrate at 5 K. IR spectra of ammonia deposited on the surface of comme... | 0 | |
3,393 | In Figure e, is the absorption peak labeled ν₂(NH₄⁺) sharp or broad in shape? | broad | Caption: Fig. 1: Infrared (IR) spectra of treated and untreated montmorillonite samples with ammonia.
Description: In-situ infrared (IR) spectra of (a) commercial montmorillonite, (b) natural montmorillonite, and (c) ammonia (NH3) ice on a silver substrate at 5 K. IR spectra of ammonia deposited on the surface of comme... | 0 | |
3,394 | How many subfigures labeled with letters does the image contain in total? | 7 | Caption: Fig. 1: Infrared (IR) spectra of treated and untreated montmorillonite samples with ammonia.
Description: In-situ infrared (IR) spectra of (a) commercial montmorillonite, (b) natural montmorillonite, and (c) ammonia (NH3) ice on a silver substrate at 5 K. IR spectra of ammonia deposited on the surface of comme... | 1 | |
3,395 | Question: In all subplots, besides wavenumber, what parameter is shown on the horizontal axis? What is its unit?
Answer: Wavelength, with units of micrometers (µm). | Wavelength； µm | Caption: Fig. 1: Infrared (IR) spectra of treated and untreated montmorillonite samples with ammonia.
Description: In-situ infrared (IR) spectra of (a) commercial montmorillonite, (b) natural montmorillonite, and (c) ammonia (NH3) ice on a silver substrate at 5 K. IR spectra of ammonia deposited on the surface of comme... | 0 | |
3,396 | In the IR spectrum, what does the absorption band at 3400 cm⁻¹ represent? | Existence of molecular water | Caption: Fig. 6: FTIR of Type A filament from Beidoushan.
Description:
b. FTIR spectrum, with enlargement of 2800–3000 cm–1spectral region (inset). Bands at 2960 cm–1, 2920 cm–1, and 2850 cm–1are due to asymmetric aliphatic CH3(end-methyl), asymmetric, and symmetric aliphatic CH2(methylene-chain), respectively10,11. Re... | 0 | |
3,397 | In the 2800–3000 cm⁻¹ region, what information is reflected by the changes in absorption peak intensity? | It reflects the relative quantities of the –CH3 and –CH2 groups. | Caption: Fig. 6: FTIR of Type A filament from Beidoushan.
Description:
b. FTIR spectrum, with enlargement of 2800–3000 cm–1spectral region (inset). Bands at 2960 cm–1, 2920 cm–1, and 2850 cm–1are due to asymmetric aliphatic CH3(end-methyl), asymmetric, and symmetric aliphatic CH2(methylene-chain), respectively10,11. Re... | 1 | |
3,398 | What are the major absorption peaks in the fingerprint region below 1500 cm⁻¹ associated with? | Related to pyrite. | Caption: Fig. 6: FTIR of Type A filament from Beidoushan.
Description:
b. FTIR spectrum, with enlargement of 2800–3000 cm–1spectral region (inset). Bands at 2960 cm–1, 2920 cm–1, and 2850 cm–1are due to asymmetric aliphatic CH3(end-methyl), asymmetric, and symmetric aliphatic CH2(methylene-chain), respectively10,11. Re... | 1 | |
3,399 | What is the wave number corresponding to the absorption peak of νₐₛCH₂? | 2920 cm⁻¹ | Caption: Fig. 6: FTIR of Type A filament from Beidoushan.
Description:
b. FTIR spectrum, with enlargement of 2800–3000 cm–1spectral region (inset). Bands at 2960 cm–1, 2920 cm–1, and 2850 cm–1are due to asymmetric aliphatic CH3(end-methyl), asymmetric, and symmetric aliphatic CH2(methylene-chain), respectively10,11. Re... | 0 | |
3,400 | Which of the two absorption peaks, νₐₛCH₃ or νₛCH₂, exhibits the higher absorbance? | νₛCH₂ | Caption: Fig. 6: FTIR of Type A filament from Beidoushan.
Description:
b. FTIR spectrum, with enlargement of 2800–3000 cm–1spectral region (inset). Bands at 2960 cm–1, 2920 cm–1, and 2850 cm–1are due to asymmetric aliphatic CH3(end-methyl), asymmetric, and symmetric aliphatic CH2(methylene-chain), respectively10,11. Re... | 1 | |
3,401 | At approximately what chemical shift (ppm) does the signal peak corresponding to cyclic phosphatidylglycerol appear? | approximately 18.5 ppm | Caption: Fig. 2: The phosphorylation of glycerol by imidazole phosphate in paste conditions.
Description:
b. Representative31P-NMR spectra over time for the reaction of 0.13 mmol calcium imidazole phosphate and 0.65 mmol glycerol in paste conditions at 50 °C. The paste was prepared by leaving 2.0 mL of a 65 mM calcium... | 0 | |
3,402 | As the time increases from 23 hours to 167 hours, how does the signal peak intensity at approximately –6.1 ppm change? | Increase in intensity | Caption: Fig. 2: The phosphorylation of glycerol by imidazole phosphate in paste conditions.
Description:
b. Representative31P-NMR spectra over time for the reaction of 0.13 mmol calcium imidazole phosphate and 0.65 mmol glycerol in paste conditions at 50 °C. The paste was prepared by leaving 2.0 mL of a 65 mM calcium... | 1 | |
3,403 | In the spectrum at t = 167 h, comparing the two signal peaks at approximately 3.9 ppm and 2.5 ppm, which one exhibits the lower intensity? | At approximately 2.5 ppm | Caption: Fig. 2: The phosphorylation of glycerol by imidazole phosphate in paste conditions.
Description:
b. Representative31P-NMR spectra over time for the reaction of 0.13 mmol calcium imidazole phosphate and 0.65 mmol glycerol in paste conditions at 50 °C. The paste was prepared by leaving 2.0 mL of a 65 mM calcium... | 1 | |
3,404 | How many fracture points are shown in total on the x-axis of this figure? | 2 | Caption: Fig. 2: The phosphorylation of glycerol by imidazole phosphate in paste conditions.
Description:
b. Representative31P-NMR spectra over time for the reaction of 0.13 mmol calcium imidazole phosphate and 0.65 mmol glycerol in paste conditions at 50 °C. The paste was prepared by leaving 2.0 mL of a 65 mM calcium... | 1 | |
3,405 | In the spectrum at t = 0 h, which five-membered heterocycle is present in the molecular structure corresponding to the signal peak? | Imidazole ring | Caption: Fig. 2: The phosphorylation of glycerol by imidazole phosphate in paste conditions.
Description:
b. Representative31P-NMR spectra over time for the reaction of 0.13 mmol calcium imidazole phosphate and 0.65 mmol glycerol in paste conditions at 50 °C. The paste was prepared by leaving 2.0 mL of a 65 mM calcium... | 0 |
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