"First extracted at low temperature" 검색결과 21-40 / 360건

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  [A+] Report Synthesis of Poly(3-hexylthiophene) (Poly(3-hexylthiophene) 합성 레포트)

  After 1 hour, dissolve Ni catalyst in THF, add it carefully, and stir the mixture at ambient temperature ... First, the soxhlet extraction may not have progressed sufficiently. ... Place the schlenk flask in the ice bath and keep it at 0℃.

  리포트 | 6페이지 | 7,000원 | 등록일 2022.02.17 | 수정일 2024.04.08

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  [A+] Report 3-hexylthiophene through work-up and purification (3-hexylthiophene 추출 레포트)

  Quenching, Extraction & Evaporation Cool the reaction mixture to room temperature and quench DI water ... First, during the first experiment, it is ambiguous and inaccurate in the process of separating each ... At 1H NMR (400 MHz in CDCl3), (1) is 7.26, 7.24 (d,1H), (2) is 6.94 (d,1H), (3) is 6.92 (s,1H), (4) is

  리포트 | 5페이지 | 7,000원 | 등록일 2022.02.17 | 수정일 2024.04.08

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  (prelab,예비&labreport,결과)3. Synthesis of Stilbene using a Wittig Reaction

  M.P -trans-Stilbene : 122~124℃ >> Since cis-stilbene is a liquid at room temperature, its melting point ... First, let's find out the mechanism of the basic rxn, and the mechanism for rxn that we will perform ... When spotting TLC for the first time, I thought that the E-spot sample was too dark and that a very small

  리포트 | 2페이지 | 2,000원 | 등록일 2023.11.27 | 수정일 2023.11.29

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  Machine Learning (영어버전)

  The first layer might extract low-level features such as edges and shapes, while the second layer might ... As machines get better at learning, they will be able to do more and more things that were previously ... The term neural network was first used in the 1930s by Warren McCulloch and Walter Pitts, two researchers

  리포트 | 5페이지 | 2,500원 | 등록일 2022.08.09 | 수정일 2022.08.11

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  공학생물학및실험(2) 5주차 결과 레포트-Stomata Opening

  First, when water is evaporated due to the transpiration, the temperature of the leaf can be lowered ... From this, we can deduce that more stromata open during the day than at night. ... than the surrounding temperature due to the cooling effect of evaporation.

  리포트 | 6페이지 | 1,500원 | 등록일 2022.01.20

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  [유기화학실험2 A+]Labreport2_bromination of stilbene

  In addition, because heat transfer was slow using large crystals, they all melted at higher temperatures ... Because of the impurities in the product, the first drop came at a temperature lower than the theoretical ... At this time, the second step is slower than the first step, and heat of 190-200 degrees is required.

  리포트 | 1페이지 | 2,000원 | 등록일 2024.03.31

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  기계공학실험_순환 펌프 실험 보고서

  First, let's look at the first result data. system curve ha = Elevation head + ( *V^2)/(2*gravity) = ... Also, the water used in the experiment can be assumed to be incompressible at room temperature and flows ... Use a suction pipe with low frictional resistance. 4.

  리포트 | 7페이지 | 2,500원 | 등록일 2023.10.03 | 수정일 2023.10.11

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  단편 sf 소설 달탐사

  in space exploration, launching three manned spacecraft named Taegeukho to the moon, marking Asia's first ... From studying the lunar soil composition to investigating the effects of low gravity on plant growth, ... astronauts, equipped with advanced scientific instruments, set out to collect moon rocks, carefully extracting

  리포트 | 1페이지 | 500원 | 등록일 2024.01.26

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  바이오에너지에 관한 모든 자료를 논문식으로 정리해놓았습니다.

  If pressure is applied at once in a short period of time, friction heat can cause high temperature If ... you're really using "low-temperature compression," you can take the time to relax and add pressurane ... The stage of the pre-treatment process can be classified according to the level of refinement, but low-gas-level

  리포트 | 42페이지 | 2,000원 | 등록일 2020.07.27

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  [유기화학실험 A+] Bromination of Stilbene/Elimination 결과보고서 (Lab report)

  out of the heating mantle, cooled at room temperature, and cooled for 5 more minutes in the ice bath ... The obtained product is dried at room temperature, not in an oven, because the melting point of diphenylacetylene ... This means that the content of the impurities is quite low.

  리포트 | 1페이지 | 2,000원 | 등록일 2023.01.27

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  서울대학교 임상영양학실험 Lipid Profile 실험보고서(영문)

  First, during the course of the experiment, the serum was left at room temperature. ... After staying at room temperature for 10 minutes, centrifuge at 3000rpm for 10 minutes. ... Kothary, On the conformational instability of human serum low-density lipoprotein: Effect of temperature

  리포트 | 3페이지 | 2,000원 | 등록일 2021.12.06 | 수정일 2021.12.14

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  사막화의 원인 영어서술

  Cause At first, find out what caused desertification. ... Global warming causes temperature rises and changes in precipitation, which increases desertification ... 1)The first type of desertification solution is to restore forests by planting trees in desert areas.

  리포트 | 2페이지 | 1,000원 | 등록일 2023.06.13

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  9-5.MBBR(Moving Bed Biofilm Reactor),Attached Growth and Combined Biological Treatment Processes 9-5. MBBR(Moving Bed Biofilm Reactor)

  At this loading, depending on the wastude the bulk liquid ammonia-N and DO concentrations, temperature ... After 10 years of operation of the first MBBR plant installed in Norway in 1996, no observed biofilm ... loading rate (2) Minimal soluble BOD concentration (3) Higher bulk liquid DO concentration (4) Higher temperature

  리포트 | 28페이지 | 3,000원 | 등록일 2022.10.22

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  [화학공학실험2] LAB3 Thermal Conductivity 결과레포트(영문)

  it is in low temperature. ... Temperature gradient at differ is due to thermal conductivity of cooper which is lower at higher temperature ... Section b and a is steep as temperature decreasing because thermal conductivity of SUS#304 is low when

  리포트 | 8페이지 | 2,000원 | 등록일 2020.08.24

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  열유체실습 결과레포트 3

  It occurs with the direction from high temperature to low temperature. ... First of all, we set the heating pipe and make an ambient air to flow near the heating pipe. ... We use interpolation to get Prandtl number at .

  리포트 | 16페이지 | 1,500원 | 등록일 2022.08.21

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  supercritical fluids (초임계유체) 실험 논의 및 고찰

  At first, the point A, we could see different two phases(liquid and vapor). ... SCF region is At normal temperatures and normal pressures, gas and liquid substances, beyond the limits ... Finally, we could observe supercritical fluids of CO2 gas at its critical temperature and critical pressure

  리포트 | 2페이지 | 2,500원 | 등록일 2019.08.05

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  [유기화학실험2 A+]Labreport1_Carbocation rearrangements-benzopinacolone

  in the product and began to melt at a temperature lower than theoretical m.p. ... The reason for the first drop at 175째C is that it was better destroyed because of the presence of impurities ... The way to increase the purity of the crystal is to slow down the crystallization.

  리포트 | 1페이지 | 2,000원 | 등록일 2024.03.31

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  Heat Engine Cycle 결과레포트 (HEC)

  Construction a P-V diagram (1) 100g Temperature - T _{high}=87.2°C - T _{low} =0.6°C Table 1. ... ×(0.01+0.04)=1.715×10-4m3 P-V Diagram (100g) (2) 200g Temperature - T _{high}=83.9°C - T _{low} =0.4° ... A heat engine is a device that does work by extraction thermal energy from a hot reservoir and exhausting

  리포트 | 8페이지 | 2,000원 | 등록일 2022.07.12

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  시계반응 레포트

  Part 2 (changes in reaction rates at diffe has the same value because it was tested at a constant temperature ... Therefore, since it is discovered that this clock reaction is the first order to iodine and the first ... When the reaction occurs across the two equations, the rate law is expressed by following the slow reaction

  리포트 | 8페이지 | 4,000원 | 등록일 2020.05.04 | 수정일 2022.03.14

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  post report, the process of the polymer

  At the low temperature, the formation of crystalline germ occurs fast relatively but the molecules move ... If compare the condition 1, 2, 3, first compare 1, 2. The difference is the temperature. ... So the crystallization at the high temperature yields the big spherulites, crystallinity and tensile

  리포트 | 3페이지 | 1,000원 | 등록일 2020.06.09

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