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1. Application of micro-FTIR spectroscopy to study molecular association of adsorbed water with lignin

Author:
Guo, Xin; Yuan, Hanmeng; Xiao, Teng; Wu, Yiqiang
Source:
International journal of biological macromolecules 2019 v.131 pp. 1038-1043
ISSN:
0141-8130
Subject:
relative humidity,   etc   ; adsorption; bound water; lignin; qualitative analysis; spectroscopy;     Show all 6 Subjects
Abstract:
... As many properties of lignin are relied on moisture content, water adsorption is very important for its product performance. To better understand water adsorption mechanism of lignin, the molecular interactions between adsorbed water and lignin was studied using micro-FTIR spectroscopy. Spectra of lignin were collected at various relative humidity (RH) levels from low to high. From qualitative ana ...
DOI:
10.1016/j.ijbiomac.2019.03.193

2. Estimation of probable maximum precipitation at three provinces in Northeast Vietnam using historical data and future climate change scenarios

Author:
Thanh Thuy, Le Thi; Kawagoe, Seiki; Sarukkalige, Ranjan
Source:
Journal of hydrology 2019 v.23 pp. 100599
ISSN:
2214-5818
Subject:
relative humidity,   etc   ; climate change; dewpoint; hydrology; rain; temperature; Vietnam;     Show all 7 Subjects
Abstract:
... In this study, three provinces in Northeast Vietnam including Bac Kan, Thai Nguyen, and Tuyen Quang are examined to determine the precipitation variation characteristics.The average yearly temperature during the last two decades in Northeast Vietnam has increased by 0.72 °C when compared to the period 1962–1990. The Clausius Clapeyron (CC) relation indicates that a warmer atmosphere can result in ...
DOI:
10.1016/j.ejrh.2019.100599

3. Influence of varnishing on the vibro-mechanical properties of wood used for violins

Author:
Lämmlein, Sarah L.; Mannes, David; van Damme, Bart; Burgert, Ingo; Schwarze, Francis W. M.
Source:
Journal of materials science 2019 v.54 no.11 pp. 8063-8095
ISSN:
0022-2461
Subject:
relative humidity,   etc   ; chemical composition; sorption; vibrational properties; wood;     Show all 5 Subjects
Abstract:
... Violins are varnished to protect them against wear, from changes in relative humidity and to enhance the instrument’s appearance. Furthermore, studies have shown that the application of varnish alters the mechanical and vibrational properties of the wood, respectively, the instrument. Commonly, the varnish impact has been studied by means of changes in stiffness, mass and damping properties of woo ...
DOI:
10.1007/s10853-019-03440-9

4. Swelling behavior of compacted bentonite with the presence of rock fracture

Author:
Bian, Xia; Cui, Yu-Jun; Zeng, Ling-Ling; Li, Xiao-Zhao
Source:
Engineering geology 2019 v.254 pp. 25-33
ISSN:
0013-7952
Subject:
relative humidity,   etc   ; air; bentonite; granite; radioactive waste; China;     Show all 6 Subjects
Abstract:
... In this study, the influence of rock fracture on the swelling behavior of compacted bentonite was investigated experimentally with bentonite compacted inside a hollow cylinder of fractured Beishan granite from China. During the test, hydration was allowed by letting water flowing into the compacted bentonite from the base plate, and air being expelled from the top plate. Along the sample, swelling ...
DOI:
10.1016/j.enggeo.2019.04.004

5. Relationship between projected changes in precipitation and fronts in the austral winter of the Southern Hemisphere from a suite of CMIP5 models

Author:
Blázquez, Josefina; Solman, Silvina A.
Source:
Climate dynamics 2019 v.52 no.9-10 pp. 5849-5860
ISSN:
0930-7575
Subject:
relative humidity,   etc   ; climate; latitude; models; specific humidity; temperature; winter;     Show all 7 Subjects
Abstract:
... A group of eight CMIP5 models are used to evaluate how much of the future changes in winter precipitation can be explained by changes in frontal activity over the Southern Hemisphere (SH). The frontal activity is calculated at the 850 hPa level using the cyclonic vorticity, the horizontal gradient of temperature and the specific humidity. The changes are evaluated taking into account the historica ...
DOI:
10.1007/s00382-018-4482-y

6. Moisture-induced deformation in the neck of a classical guitar

Author:
Stanciu, Mariana Domnica; Bucur, Voichița; Munteanu, Violeta Mihaela; Georgescu, Sergiu Valeriu; Năstac, Silviu Marian
Source:
Holzforschung 2019 v.73 no.4 pp. 371-379
ISSN:
1437-434X
Subject:
relative humidity,   etc   ; acoustics; deformation; music; steel; water content; wood;     Show all 7 Subjects
Abstract:
... Classical guitar necks were submitted to 40, 65 and 80% relative humidity (RH) during time periods ranging from 24 h to several months, and moisture-induced deformations were observed. Different types of classical guitar necks were investigated in terms of structure and reinforcement. The influences of the wood species and the neck reinforcements on the moisture content (MC)-induced deformation we ...
DOI:
10.1515/hf-2018-0021

7. Seasonal variation in atmospheric particle electrostatic charging states determined using a parallel electrode plate device

Author:
Iwata, Ayumi; Fujioka, Kentaro; Yonemichi, Takuto; Fukagata, Koji; Kurosawa, Keiichi; Tabata, Ryoya; Kitagawa, Midori; Takashima, Taku; Okuda, Tomoaki
Source:
Atmospheric environment 2019 v.203 pp. 62-69
ISSN:
1352-2310
Subject:
relative humidity,   etc   ; air; electrodes; electrostatic interactions; lungs; seasonal variation; temperature;     Show all 7 Subjects
Abstract:
... In order to understand the electrostatic charging state of atmospheric hundreds nanometer particles that has particular impact on health, we have observed the atmospheric particles charge distributions intermittently for one year. To easily estimate particle charge distribution, first of all, we have developed a simple instrument and calculation method. We confirmed by comparison with stationary c ...
DOI:
10.1016/j.atmosenv.2019.01.040

8. Diffuse solar radiation models for different climate zones in China: Model evaluation and general model development

Author:
Zhou, Yong; Wang, Dengjia; Liu, Yanfeng; Liu, Jiaping
Source:
Energy conversion and management 2019 v.185 pp. 518-536
ISSN:
0196-8904
Subject:
relative humidity,   etc   ; climatic zones; diffuse solar radiation; models; temperature; China;     Show all 6 Subjects
Abstract:
... In this paper, nine new diffuse fraction and eight new diffuse coefficient models were developed by introducing precipitation as one of the model parameters. Concurrently, thirty-four existing diffuse fraction and eleven existing diffuse coefficient models were reviewed. The existing and proposed models were compared to assess their applicability in different climate zones in China. According to t ...
DOI:
10.1016/j.enconman.2019.02.013

9. Efficient air-stable perovskite solar cells with a (FAI)₀.₄₆(MAI)₀.₄₀(MABr)₀.₁₄(PbI₂)₀.₈₆(PbBr₂)₀.₁₄ active layer fabricated via a vacuum flash-assisted method under RH > 50%

Author:
Chen, Li; Cao, Hui; Wang, Shurong; Luo, Yuxing; Tao, Tao; Sun, Jinwei; Zhang, Mingdao
Source:
RSC advances 2019 v.9 no.18 pp. 10148-10154
ISSN:
2046-2069
Subject:
relative humidity,   etc   ; air; cations; electron transfer; electrons; geometry; solar cells;     Show all 7 Subjects
Abstract:
... In this work, we present a new kind of perovskite, (FAI)₀.₄₆(MAI)₀.₄₀(MABr)₀.₁₄(PbI₂)₀.₈₆(PbBr₂)₀.₁₄, the vacuum flash-assisted solution processing (VASP) of which can be carried out under relative humidity (RH) higher than 50% in ambient air. The smooth and highly crystalline perovskite showed a maximum PCE of 18.8% in perovskite solar cells. This kind of perovskite was demonstrated to be of good ...
DOI:
10.1039/c9ra01625b

10. Subjective thermal strain impairs endurance performance in a temperate environment

Author:
Van Cutsem, Jeroen; Roelands, Bart; De Pauw, Kevin; Meeusen, Romain; Marcora, Samuele
Source:
Physiology & behavior 2019 v.202 pp. 36-44
ISSN:
0031-9384
Subject:
relative humidity,   etc   ; athletes; fatigue strength; heat; peak oxygen uptake; sensation;     Show all 6 Subjects
Abstract:
... The aim of this study was to test the hypothesis that subjective thermal strain can reduce endurance performance independently from the general physiological strain normally associated with impaired endurance performance in the heat.In 20 °C and 44% relative humidity, 12 endurance-trained athletes (1♀ 11♂; mean ± SD; age: 27 ± 6 y; VO2max: 61 ± 6 ml/kg/min) performed a time to exhaustion (TTE) tes ...
DOI:
10.1016/j.physbeh.2019.01.011

11. Enhancement of open circuit voltage for CuSCN-based perovskite solar cells by controlling the perovskite/CuSCN interface with functional molecules

Author:
Yang, In Seok; Lee, Soomin; Choi, Juseob; Jung, Min Tai; Kim, Jeongho; Lee, Wan In
Source:
Journal of materials chemistry A 2019 v.7 no.11 pp. 6028-6037
ISSN:
2050-7496
Subject:
relative humidity,   etc   ; electric potential difference; hysteresis; isothiocyanates; moieties; solar cells;     Show all 6 Subjects
Abstract:
... CuSCN, a low-cost inorganic hole transporting material (HTM), exhibits notably high hole-mobility and material stability, but turns out to show significantly lower open circuit voltage (VOC) than organic hole-conductors in its application as an HTM in perovskite solar cells (PSCs). Herein, for the enhancement of VOC, various functional molecules were introduced on the surface of a CH₃NH₃PbI₃ (MAPb ...
DOI:
10.1039/c8ta12217b

12. A rapid-response room-temperature planar type gas sensor based on DPA-Ph-DBPzDCN for the sensitive detection of NH₃

Author:
He, Junming; Yan, Xianju; Liu, Ao; You, Rui; Liu, Fangmeng; Li, Siqi; Wang, Jing; Wang, Chenguang; Sun, Peng; Yan, Xu; Kang, Bonan; He, Jinghui; Wang, Yue; Lu, Geyu
Source:
Journal of materials chemistry A 2019 v.7 no.9 pp. 4744-4750
ISSN:
2050-7496
Subject:
relative humidity,   etc   ; ambient temperature; ammonia; chemistry; detection limit; semiconductors;     Show all 6 Subjects
Abstract:
... The development of rapid-response gas sensors for the detection of NH₃ gas at room temperature still remains a huge challenge and is limited by the poor room-temperature sensing materials and their unsatisfactory sensing characteristics. Herein, an organic semiconductor, 3,6-bis(4-(diphenylamino)phenyl)dibenzo[a,c]pyrazine-11,12-dinitrile (DPA-Ph-DBPzDCN),-based planar type sensor was successfully ...
DOI:
10.1039/c8ta10840d

13. Dual-cubic-cage based lanthanide sulfate–carboxylpyrazolate frameworks with high hydrolytic stability and remarkable proton conduction

Author:
He, Liang; Nath, Jayanta Kumar; Chen, Er-Xia; Lai, Heng-Dong; Huang, Shan-Lin; Lin, Qipu
Source:
Chemical communications 2019 v.55 no.17 pp. 2497-2500
ISSN:
1364-548X
Subject:
relative humidity,   etc   ; ambient temperature; chemical compounds; chemical reactions; recycling;     Show all 5 Subjects
Abstract:
... We report herein a series of lanthanide sulfate–carboxylpyrazolate frameworks based on double cuboid cavities that are highly hot-water stable, and have room-temperature proton conductivity of over 10⁻³ S cm⁻¹ at 97% relative humidity without any appreciable loss of performance for at least three recycling times, ranking among the best lanthanide-based coordination frameworks. ...
DOI:
10.1039/c8cc09474h

14. A water stable layered Tb(iii) polycarboxylate with high proton conductivity over 10⁻² S cm⁻¹ in a wide temperature range

Author:
FengThese two authors contributed equally to this article., Lu; Wang, Hui-Sheng; Xu, Hai-Long; Huang, Wen-Tao; Zeng, Tian-Yu; Cheng, Qing-Rong; Pan, Zhi-Quan; Zhou, Hong
Source:
Chemical communications 2019 v.55 no.12 pp. 1762-1765
ISSN:
1364-548X
Subject:
relative humidity,   etc   ; chemical communication; chemical compounds; chemical reactions; moieties; temperature;     Show all 6 Subjects
Abstract:
... An unprecedented Tb(iii) polycarboxylate, {[Tb₄(TTHA)₂(H₂O)₄]·7H₂O}ₙ (1), has been synthesized. It possesses an efficient proton transfer pathway formed by water molecules and carboxyl groups, which exhibits proton conductivity over 10⁻² S cm⁻¹ at 295–358 K and 98% relative humidity. ...
DOI:
10.1039/c8cc08706g

15. High proton conduction in an excellent water-stable gadolinium metal–organic framework

Author:
Xing, Xiu-Shuang; Fu, Zhi-Hua; Zhang, Ning-Ning; Yu, Xiao-Qing; Wang, Ming-Sheng; Guo, Guo-Cong
Source:
Chemical communications 2019 v.55 no.9 pp. 1241-1244
ISSN:
1364-548X
Subject:
relative humidity,   etc   ; chemical reactions; coordination polymers; gadolinium; quaternary ammonium compounds;     Show all 5 Subjects
Abstract:
... A new metal–organic framework with excellent water stability, {H[(N(CH₃)₄)₂][Gd₃(NIPA)₆]}·3H₂O (1, H₂NIPA = 5-nitroisophthalic acid), displays a proton conductivity of 7.17 × 10⁻² S cm⁻¹ (at 75 °C and 98% relative humidity), which is among the highest values for proton-conducting MOFs. ...
DOI:
10.1039/c8cc08700h

16. Development and characterization of conductive ring spun hybrid yarns

Author:
Shahzad, Amir; Ali, Zulfiqar; Ali, Usman; Khaliq, Zubair; Zubair, Muhammad; Kim, Ick Soo; Hussain, Tanveer; Khan, Muhammad Qamar; Rasheed, Abher; Qadir, Muhammad Bilal
Source:
The journal of the Textile Institute 2019 v.110 no.1 pp. 141-150
ISSN:
1754-2340
Subject:
relative humidity,   etc   ; electrical resistance; fabrics; polyesters; stainless steel; viscose; yarns;     Show all 7 Subjects
Abstract:
... Development of conductive yarns for smart textile applications is the most demanding area of research these days. This study was aimed to investigate the effect of yarn constructional parameters, and relative humidity on electromechanical properties of conductive ring spun hybrid yarns. Stainless steel (SS) fibre was blended with polyester and viscose fibre separately on 12% and 24% weight basis t ...
DOI:
10.1080/00405000.2018.1507695

17. Influence of Glue Line Thickness on the Strength of Joints Bonded with PVAc Adhesives

Author:
Bomba, Jan; Šedivka, Přemysl; Hýsek, Štěpán; Fáber, Jiří; Oberhofnerová, Eliška
Source:
Forest products journal 2018 v.68 no.2 pp. 120-126
ISSN:
0015-7473
Subject:
relative humidity,   etc   ; adhesives; temperature; thermoplastics;     Show all 4 Subjects
Abstract:
... The purpose of this study was to evaluate the impact of glue line thickness on joint strength properties while using two types of PVAc adhesive (i.e., one-component Rhenocell 3W, 4B Plus, resistivity class D3, and two-component Protovil VP244/2C, resistivity class D4) belonging to the group of thermoplastic adhesives intended for nonconstruction joints. Joint strength testing was carried out using ...
DOI:
10.13073/FPJ-D-17-00038

18. Effects of relative humidity and PM2.5 chemical compositions on visibility impairment in Chengdu, China

Author:
Liu, Fan; Tan, Qinwen; Jiang, Xia; Yang, Fumo; Jiang, Wenju
Source:
Journal of environmental sciences (China) 2019 v.86 pp. 15-23
ISSN:
1001-0742
Subject:
relative humidity,   etc   ; ammonium nitrate; ammonium sulfate; autumn; emissions; nitrogen dioxide; organic matter; particulates; winter; China;     Show all 10 Subjects
Abstract:
... To better understand the potential causes of visibility impairment in autumn and winter in Chengdu, relative humidity (RH), visibility, the concentrations of PM2.5 and its chemical components were on-line measured continuously in Chengdu from Nov. 2016 to Jan. 2017. Six obvious haze episodes occurred in Chengdu, with the total time of haze episodes accounted for more than 90% of the total observat ...
DOI:
10.1016/j.jes.2019.05.004

19. Thermal expansion of wood at different equilibrium moisture contents

Author:
Goli, Giacomo; Becherini, Francesca; Di Tuccio, Maria Concetta; Bernardi, Adriana; Fioravanti, Marco
Source:
Journal of wood science 2019 v.65 no.1 pp. 4
ISSN:
1435-0211
Subject:
relative humidity,   etc   ; Picea abies; cell walls; data collection; deformation; equilibrium moisture content; temperature; thermal expansion; wood;     Show all 9 Subjects
Abstract:
... The measurement of wood thermal expansion at fixed values of moisture content (MC) between the dry state and the cell wall saturation point is a very difficult task, as MC varies with temperature. Being hygroscopic deformations much larger than thermal ones, in order to evaluate the latter, when changing temperature also relative humidity should be adapted. To achieve this goal a special apparatus ...
DOI:
10.1186/s10086-019-1781-9

20. Evolution of boundary layer ozone in Shijiazhuang, a suburban site on the North China Plain

Author:
Zhao, Wei; Tang, Guiqian; Yu, Huan; Yang, Yang; Wang, Yinghong; Wang, Lili; An, Junlin; Gao, Wenkang; Hu, Bo; Cheng, Mengtian; An, Xingqin; Li, Xin; Wang, Yuesi
Source:
Journal of environmental sciences (China) 2019 v.83 pp. 152-160
ISSN:
1001-0742
Subject:
relative humidity,   etc   ; nitrogen oxides; ozone; photochemistry; pollution; temperature; volatile organic compounds; wind; China;     Show all 9 Subjects
Abstract:
... The structure of the boundary layer affects the evolution of ozone (O3), and research into this structure will provide important insights for understanding photochemical pollution. In this study, we conducted a one-month observation (from June 15 to July 14, 2016) of the boundary layer meteorological factors as well as O3 and its precursors in Luancheng County, Shijiazhuang (37°53′N, 114°38′E). Ou ...
DOI:
10.1016/j.jes.2019.02.016