scholarly journals Lowering relative humidity level increases epidermal protein deimination and drives human filaggrin breakdown

2017 ◽  
Vol 86 (2) ◽  
pp. 106-113 ◽  
Author(s):  
Laura Cau ◽  
Valérie Pendaries ◽  
Emeline Lhuillier ◽  
Paul R. Thompson ◽  
Guy Serre ◽  
...  
Author(s):  
Kholliyev Askar Ergashovich ◽  
◽  
Fozilov Sherzod Musurmonovich ◽  

The article presents data obtained from the study of the daily intensity of transpiration during the flowering stage of soybean varieties. According to the data on the diurnal variation of transpiration intensity, this process was accelerated in Vilana and Ustoz MM-60 varieties of soybeans, and a relative decrease in intensity was observed in Baraka and Tomaris man-60 varieties. Different variations in the intensity of transpiration in the cross section of the studied varieties may depend on the biological characteristics of the varieties as well as the air temperature and its relative humidity level.


2017 ◽  
Vol 14 (6) ◽  
pp. 961-963 ◽  
Author(s):  
Aaron Angel Salas-Sanchez ◽  
Maria Elena Lopez-Martin ◽  
Juan Antonio Rodriguez-Gonzalez ◽  
Francisco Jose Ares-Pena

2020 ◽  
Vol 34 (03) ◽  
Author(s):  
Bhawana Asnani

Flora is the nature’s most precious gift to man. In ancient times, regard and love for flora was so great that this kindred relationship was extended even to houseplants. In this study, relative humidity level in the selected rooms, i.e., drawing rooms and dining rooms of the 10 west facing residential buildings along with the National Highway- 8 in polluted zone, of Udaipur Rajasthan was analyzed. Four varieties of foliage and succulent plants were kept in one, two or four suitable corners with four different habits, viz., Opened and Closed windows and fan in ON and OFF mode. To find out the existing relative humidity level, all the experiments were done without any houseplants on day 1 in selected rooms. The houseplants were kept on day 2 to judge the impact of houseplants on humidity level and again houseplants were removed on day 3 to know the retention of impact of houseplants. As a result, it was found that foliage plants were more effective than succulents in maintaining the level of relative humidity of the atmosphere.


1970 ◽  
pp. 31
Author(s):  
R. UDHAYAKUMAR

Mango anthracnose caused by Colletotrichum gloeosporioides is a highly destructive pathogen that causes considerable damage, inflicting severe qualitative and quantitative losses. Among the external factors which influence the growth of fungi, temperature and relative humidity plays an important role. Each pathogen has got its own cardinal temperature and relative humidity, also understanding about these factors will help to standardize the management strategies. Among the six temperature levels tested, 25°C was found to be more conducive for the mycelial growth (88.33 mm), conidial germination (69.00%) of C. gloeosporioides, and maximum disease development (97.00 %) which was followed by room temperature (28+2°C).The maximum disease incidence of 97.00 per cent in the fruits was recorded at 25oC followed by room temperature (28±2oC) (83.33 %) after 10 days of inoculation. Among the seven relative humidity levels tested, the maximum mycelial growth (87.00 mm), conidial germination (72.00%) and maximum disease incidence (97.00 %) was recorded at 100 per cent relative humidity, which was followed by 92.9% relative humidity level (83.00 mm; 61.67% mycelial growth and conidia germination, respectively). The least mycelial growth (7.33 mm) and conidial germination (0.0%) was recorded at 36.8% relative humidity level.


2021 ◽  
Vol 9 (3) ◽  
pp. 276-278
Author(s):  
Naresh Kumar ◽  

The relative humidity studies revealed that maximum mycelial of fungus was observed at 90 per cent relative humidity (89.00 mm), which was followed by 100 per cent (86.30 mm). The least mycelia growth was observed at 50 per cent (45.30 mm). A significant decrease in mycelium growth was observed at 80, 70 and 60 per cent (80.40 mm, 70.20 mm and 57.00 mm) humidity level, respectively. Each fungus has its relative humidity range for the growth.


FLORESTA ◽  
2013 ◽  
Vol 44 (1) ◽  
pp. 73 ◽  
Author(s):  
Alex Caetano Pimenta ◽  
Katia Christina Zuffellato-Ribas ◽  
Bruno Galvêas Laviola

Neste trabalho objetivou-se gerar informações referentes à morfologia de frutos, de sementes e de plântulas de Jatropha curcas L. (Euphorbiaceae) que auxiliem na identificação da espécie e na compreensão do seu processo germinativo e início do seu ciclo biológico. Foram determinados o grau de umidade e o peso de mil sementes, sendo utilizados para descrição e ilustração 50 frutos e 50 sementes. Para descrição e ilustração da plântula, foram colocadas para germinar 120 sementes. O grau de umidade das sementes de Jatropha curcas utilizadas nesse trabalho foi de 7,0% e o peso de mil sementes igual a 663,9 g. Os frutos são secos, simples, deiscentes, esquizocarpáceos, medem em média 2,82±0,18 cm de comprimento e 2,15±0,12 cm de diâmetro e contêm sempre três sementes. As sementes têm 1,75±0,06 cm de comprimento, 1,09±0,05 cm de largura e 0,87±0,05 cm de espessura, em média, e possuem forma ovoide, coloração preta com estrias amareladas, endosperma e embrião espatulado com cotilédones membranáceos e ovoides arredondados. A germinação se iniciou entre três e quatro dias, encerrando-se aos onze dias após a semeadura no substrato vermiculita, com 90% de plântulas normais e de desenvolvimento epígeo e fanerocotiledonar.Palavras-chave: Biocombustível; Euphorbiaceae; pinhão-manso. AbstractMorphology of fruits, seeds and seedlings of Jatropha curcas. This research aims to generate information on morphology of the Jatropha curcas L. - Euphorbiaceae fruits, seeds and seedlings, in order to assist the species identification, as well as to understand its germination process and beginning of its biologic cycle. We determined weight and relative humidity of one thousand seeds, while 50 fruits and 50 seeds were used for description and illustration. For seedling description and illustration, we put 120 seeds in germination. The humidity level of  Jatropha curcas seeds used in this work was 7,0% and the weight of one thousand seeds was 663,9 g. Fruits are dry, simple, characterized by dehiscence, schizocarpic, averaging 2,82±0,18 cm in length and 2,15±0,12 cm in diameter, always containing three seeds. Seeds average dimension is 1,75±0,06 cm in length, 1,09±0,05 cm in width and 0,87±0,05 cm in thickness, they have ovoid shape, black color with yellowish stripes, spoon shaped embryo with membranous rounded ovoid cotyledons. Germination began within three and four days and ended eleven days after sowing in vermiculite substrate, with 90% of seedlings presenting normal epigeous and fanerocotiledonar development.Keywords: Biofuel; Euphorbiaceae; Jatropha curcas.


1992 ◽  
Vol 247 ◽  
Author(s):  
E. Punkka ◽  
H. Isotalo ◽  
M. Ahlskog ◽  
H. Stubb

ABSTRACTThe stability of the conductivity of poly(3-alkylthiophenes) has been studied in controlled environmental conditions. High humidity levels at elevated temperatures have been found to strongly influence the dedoping process. Highly FeCl3-doped samples lose their conductivity faster than lightly doped or undoped polymers. The conductivity of undoped poly(3-octylthiophene), however, initially increased by nearly two orders of magnitude as the relative humidity level was raised from 50% to 95% at 70 °C. The largest conductivity decay induced by humidity and heat was observed in thin samples. Measurements of the field-effect mobility reveal that the humidity-induced drop of the conductivity is caused by a decreasing number of active dopants, whereas heating the sample additionally results in a deterioration of the charge carrier mobility.


Cellulose ◽  
2021 ◽  
Author(s):  
Binbin Lin ◽  
Julia Auernhammer ◽  
Jan-Lukas Schäfer ◽  
Tobias Meckel ◽  
Robert Stark ◽  
...  

AbstractPaper materials are well-known to be hydrophilic unless chemical and mechanical processing treatments are undertaken. The relative humidity impacts the fiber elasticity, the interfiber joint behavior and the failure mechanism. In this work, we present a comprehensive experimental and computational study on mechanical properties of the fiber and the fiber network under humidity influence. The manually extracted cellulose fiber is exposed to different levels of humidity, and then mechanically characterized using atomic force microscopy, which delivers the humidity dependent longitudinal Young’s modulus. We describe the relation and calibrate the data into an exponential function, and the obtained relationship allows calculation of fiber elastic modulus at any humidity level. Moreover, by using confoncal laser scanning microscopy, the coefficient of hygroscopic expansion of the fibers is determined. We further present a finite element model to simulate the deformation and the failure of the fiber network. The model includes the fiber anisotropy and the hygroscopic expansion using the experimentally determined constants, and further considers interfiber behavior and debonding by using a humidity dependent cohesive zone interface model. Simulations on exemplary fiber network samples are performed to demonstrate the influence of different aspects including relative humidity and fiber-fiber bonding parameters on the mechanical features, such as force-elongation curve, strength and extensibility. Finally, we provide computational insights for interfiber bond damage pattern with respect to different humidity level as further outlook.


1946 ◽  
Vol 24c (6) ◽  
pp. 298-302 ◽  
Author(s):  
L. P. V. Johnson

Storage of Populus tremuloides and P. grandidentata seeds at room temperature in a controlled-humidity series showed the optimum to be 20% relative humidity for both species. At this humidity level, seed viability was retained by P. grandidentata for 555 days and by P. tremuloides for 455 days, as compared to approximately 28 days for both checks (open air).Similar storage of seeds of four Ulmus species showed tolerance of a wide humidity range by all species, the optimum storage condition being within a range of approximately 20 to 50% relative humidity.Germinability in all four Ulmus species was greatly increased when seeds were tested in a lighted germinator.


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