HADIMANI SHIVAKUMAR¹, GURUMURTHY G. D.¹, BOMMEGOWDA K. B.², S. PARAMESHWARA³

Journal of Polymer Materials, Vol.40, No.1-2, pp. 93-103, 2023, DOI:10.32381/JPM.2023.40.1-2.8

Abstract Polymer composites are increasing in demand in energy storage applications including in the electronic as well as electrical industries due to the ease of processing of these materials with associated advantages like light weight, corrosion resistance, and high mechanical strength. In this investigation, efforts are made to enhance the charging and discharging properties of epoxy/carbon fabric composite by the addition of graphene nanoplatelets (GNPs) into the epoxy/ carbon matrix. The performance of the composites with graphene platelets of 0.5 to 5 wt. % in epoxy were characterized and 1wt.% percolation threshold was observed poor performance in gravimetric charge and discharge… More >

R. J. Johnson^∗, R. Pitchumani^†

Frontiers in Heat and Mass Transfer, Vol.1, No.1, pp. 1-9, 2010, DOI:10.5098/hmt.v1.1.3007

Abstract Much research is currently being performed with carbon nanotube additives to neat resin systems to enhance properties such as thermal and electrical conductivity, strength, modulus and damping. Fabrication of parts based on carbon nanotube filled resin systems requires information on their cure kinetics and rheology, which has been relatively less studied so far. This work presents an extensive experimental study that systematically characterizes the cure kinetics and viscosity as a function of degree of cure and temperature of EPON 815C/EPICURE 3274 epoxy resin system laden with carbon nanotubes. Studies are conducted to determine the effects of the carbon nanotube loading… More >

Lei Zhu^1,#, Lihe Hou^1,3,#, Yu Zhang¹, Yang Jiang¹, Yi Wang^1,2, Meiping Zhang^1,2, Mingzhu Zhao^1,2,*, Kangyu Wang^1,2,*

Phyton-International Journal of Experimental Botany, Vol.93, No.2, pp. 313-327, 2024, DOI:10.32604/phyton.2024.047938

Abstract Panax ginseng C. A. Mey. is an important plant species used in traditional Chinese medicine, whose primary active ingredient is a ginsenoside. Ginsenoside biosynthesis is not only regulated by transcription factors but also controlled by a variety of structural genes. Nonetheless, the molecular mechanism underlying ginsenoside biosynthesis has always been a topic in the discussion of ginseng secondary metabolites. Squalene epoxidase (SQE) is a key enzyme in the mevalonic acid pathway, which affects the biosynthesis of secondary metabolites such as terpenoid. Using ginseng transcriptome, expression, and ginsenoside content databases, this study employed bioinformatic methods to systematically analyze the genes encoding… More >

Bradley Doleman^a , Messiha Saad^a,*

Frontiers in Heat and Mass Transfer, Vol.4, No.2, pp. 1-8, 2013, DOI:10.5098/hmt.v4.2.3006

Abstract Thermal diffusivity, specific heat, and thermal conductivity are important thermophysical properties of composite materials. These properties play a significant role in the engineering design process of space systems, aerospace vehicles, transportation, energy storage devices, and power generation including fuel cells. This paper examines these thermophysical properties of the AS4/3501-6 composite using the xenon flash method to measure the thermal diffusivity in accordance with ASTM E1461 and differential scanning calorimetry to measure the specific heat in accordance with ASTM E1269. The thermal conductivity was then calculated using a proportional relationship between the density, specific heat, and thermal diffusivity. More >

Rizwan Iqbal^1,*, Rashid Hussain², Sheeraz Arif³, Nadia Mustaqim Ansari⁴, Tayyab Ahmed Shaikh²

CMC-Computers, Materials & Continua, Vol.77, No.2, pp. 1575-1598, 2023, DOI:10.32604/cmc.2023.042432

Abstract Software-Defined Networking (SDN) is a new network technology that uses programming to complement the data plane with a control plane. To enable safe connection, however, numerous security challenges must be addressed. Flooding attacks have been one of the most prominent risks on the internet for decades, and they are now becoming challenging difficulties in SDN networks. To solve these challenges, we proposed a unique firewall application built on multiple levels of packet filtering to provide a flooding attack prevention system and a layer-based packet detection system. This study offers a systematic strategy for wrapping up the examination of SDN operations.… More >

JING LI^1,2, WANWAN FAN⁴, LILI HAO¹, YONGSHENG LI⁵, GUOCHENG YU¹, WEI SUN⁶, XIANQIONG LUO^2,*, JINGXIANG ZHONG^1,3,*

BIOCELL, Vol.47, No.11, pp. 2485-2494, 2023, DOI:10.32604/biocell.2023.044177

Abstract Objective: This study aimed to investigate the potential of human umbilical cord mesenchymal stem cell (hucMSC)-derived exosomes (hucMSC-Exos) in inhibiting hypoxia-induced cell hyper proliferation and overexpression of vascular endothelial growth factor A (VEGF-A) in immature human fetal retinal microvascular endothelial cells (hfRMECs). Methods: Exosomes were isolated from hucMSCs using cryogenic ultracentrifugation and characterized through various techniques, including transmission electron microscopy, nanoparticle tracking analysis, bicinchoninic acid assays, and western blotting. The hfRMECs were identified using von Willebrand factor (vWF) co-staining and divided into four groups: a control group cultured under normoxic condition, a hypoxic model group, a hypoxic group treated with… More > Graphic Abstract

CHENYANG CHEN^1,*, JUAN WEN¹, WEI HUANG¹, JIANG LI^2,*

BIOCELL, Vol.47, No.11, pp. 2423-2433, 2023, DOI:10.32604/biocell.2023.044459

Abstract Background: Pulmonary arterial hypertension (PAH) is a chronic and progressive disease that is strongly associated with dysregulation of glucose metabolism. Alterations in nuclear receptor subfamily 4 group A member 1 (NR4A1) activity alter the outcome of PAH. This study aimed to investigate the effects of NR4A1 on glycolysis in PAH and its underlying mechanisms. Methods: This study included twenty healthy volunteers and twenty-three PAH patients, and plasma samples were collected from the participants. To mimic the conditions of PAH in vitro, a hypoxia-induced model of pulmonary artery smooth muscle cell (PASMC) model was established. The proliferation of PASMCs was assessed… More > Graphic Abstract

WENLI JIANG^1,#, JUNYI SHEN^1,#, XIAOQIANG DU^1,#, YAN QIU¹, JIAN ZHONG¹, ZHI OUYANG¹, BINGMEI M. FU², YE ZENG^1,*

BIOCELL, Vol.47, No.10, pp. 2255-2263, 2023, DOI:10.32604/biocell.2023.030880

Abstract Background: Anisodine hydrobromide (AT3), an anti-cholinergic agent, could be delivered to the brain across the blood-brain barrier and has been used clinically for the treatment of cerebral ischemia/reperfusion injury. Endothelial dysfunction can be caused by hypoxia/reoxygenation (H/R) via oxidative stress and metabolic alterations. The present study investigated whether AT3 regulates the production of nitric oxide (NO) and reactive oxygen species (ROS), and the HIF-1α pathway via regulation of muscarinic acetylcholine receptors (mAChRs) in brain microvascular endothelial cells after H/R exposure. Methods: Under H/R conditions, hCMEC/D3 cerebral microvascular endothelial cells were treated with AT3. Specific inhibitors of M2- and M4- mAChRs… More > Graphic Abstract

Yan Yan, Junpeng Dong, Haibo Hu, Susu Yang, Lin Liu, Lei Qin^*

Journal of Renewable Materials, Vol.11, No.11, pp. 3907-3916, 2023, DOI:10.32604/jrm.2023.028099

Abstract One strain of Hypoxylon sp. CXM-3 and one strain of Sistotrema brinkmannii CXM-4 were inoculated onto sterilized cherry, poplar, birch, and basswood sheets in a certain shape and incubated at constant temperature and humidity for 4, 8, 12, and 16 weeks, respectively, to analyze whether the grain pattern formed by the zone lines was consistent with the predetermined pattern. The results showed that the zone lines of CXM-3 of Hypoxylon were free, delicate, and soft, with brown lines and black staining, mostly accompanied by black and brown dots, facets, and clusters, while the zone lines of CXM-4 of Sistotrema brinkmannii… More > Graphic Abstract

DANIELLA M. ADAMS¹, KALIE F. BECKERS¹, JULIET P. FLANAGAN¹, VIVIANE C. L. GOMES^1,#, CHIN-CHI LIU¹, JENNY L. SONES^1,2,*

BIOCELL, Vol.47, No.9, pp. 2051-2058, 2023, DOI:10.32604/biocell.2023.029644

Abstract Background: Women with obesity have higher risk of adverse pregnancy outcomes, including preeclampsia (PE). Late-gestational hypertension, aberrant fetoplacental development, and fetal growth restriction (FGR), hallmarks of PE, are observed spontaneously in BPH/5 mice. Similar to obese preeclamptic women, BPH/5 mice have higher visceral white adipose tissue (WAT) and circulating leptin. We hypothesized that attenuation of maternal obesity and serum leptin in pregnant BPH/5 mice will improve fetoplacental development by decreasing hypoxia markers and leptin expression at the maternal-fetal interface. Methods: To test this hypothesis, BPH/5 mice were fed ad libitum (lib) and pair-fed (PF) to C57 ad lib controls beginning… More >