keyword
https://read.qxmd.com/read/38591892/a-hypothesis-based-hop-microbiology-laboratory-module-testing-the-plausibility-of-the-mythical-origin-of-the-india-pale-ale
#21
JOURNAL ARTICLE
Julio Molina Pineda, Amanda N Scholes, Jeffrey A Lewis
As one of the most famous fermented drinks in the world, beer is an especially relatable topic for microbiology courses. Here, we describe a short and easily adaptable module based on the antibacterial properties of hops used in brewing. By the 15th century, beer recipes included hops (the flower of the Humulus lupulus plant) as a bittering agent and antimicrobial. By the 19th century, the highly hopped Indian Pale Ale (IPA) became popular, and a modern myth has emerged that IPAs were invented to survive long ocean voyages such as from Britain to India...
April 9, 2024: Journal of Microbiology & Biology Education: JMBE
https://read.qxmd.com/read/38587520/diversity-of-androgens-comparison-of-their-significance-and-characteristics-in-vertebrate-species
#22
JOURNAL ARTICLE
Takashi Yazawa, Yoshitaka Imamichi, Takahiro Sato, Takanori Ida, Akihiro Umezawa, Takeshi Kitano
Androgen(s) is one of the sex steroids that are involved in many physiological phenomena of vertebrate species. Although androgens were originally identified as male sex hormones, it is well known now that they are also essential in females. As in the case of other steroid hormones, androgen is produced from cholesterol through serial enzymatic reactions. Although testis is a major tissue to produce androgens in all species, androgens are also produced in ovary and adrenal (interrenal tissue). Testosterone is the most common and famous androgen...
February 2024: Zoological Science
https://read.qxmd.com/read/38585089/2-year-wencheng-waxy-yam-pesticide-residue-investigation-and-quality-evaluation
#23
JOURNAL ARTICLE
Liping Chen, Yuhong Liu, Weiran Zheng, Dalun Xu, Baiyi Lu, Caixia Sun
Wencheng waxy yam is famous for its glutinous and resilient taste, similar to waxy rice, but there is currently a lack of systematic research on the quality of this featured product, and little is known about its pesticide residues. We carried out a 2 year investigation of Wencheng waxy yam at seven sites from 2021 to 2022 to determine the oxidase content and phytochemical characteristics, namely, amylose, amylopectin, protein, reducing sugar, and mineral contents, such as K, Fe, and Zn, including the status of pesticide residues...
April 2, 2024: ACS Omega
https://read.qxmd.com/read/38584532/gastrodin-attenuates-colitis-and-prevents-tumorigenesis-in-mice-by-interrupting-tlr4-md2-nf-%C3%AE-b-signaling-transduction
#24
JOURNAL ARTICLE
Zhilun Yu, Ruiyang Gao, Bei Yue, Beibei Zhang, Xiaolong Geng, Cheng Lv, Hao Wang, Ziyi Wang, Zhengtao Wang, Wei Dou
INTRODUCTION: Chronic inflammation is one of the causative factors for tumorigenesis. Gastrodin is a main active ingredient isolated from Gastrodia elata Blume, a famous medicinal herb with a long edible history. AIM: This study aimed to explore the effects of gastrodin on colitis-associated carcinogenesis (CRC) in mice and to elucidate its potential molecular mechanisms. METHODS: Balb/c mice were induced with azoxymethane (AOM) and dextran sulfate sodium (DSS) for 12 weeks...
April 5, 2024: Anti-cancer Agents in Medicinal Chemistry
https://read.qxmd.com/read/38584222/art-perception-is-affected-by-negative-knowledge-about-famous-and-unknown-artists
#25
JOURNAL ARTICLE
Hannah Kaube, Rasha Abdel Rahman
The biographies of some celebrated artists are marked by accounts that paint a far from beautiful portrait. Does this negative-social knowledge influence the aesthetic experience of an artwork? Does an artist's fame protect their paintings from such an influence? We present two preregistered experiments examining the effect of social-emotional biographical knowledge about famous and unknown artists on the reception and perception of their paintings, using aesthetic ratings and neurocognitive measures. In Experiment 1, paintings attributed to artists characterised by negative biographical information were liked less, evoked greater feelings of arousal and were judged lower in terms of quality, than paintings by artists associated with neutral information...
April 7, 2024: Scientific Reports
https://read.qxmd.com/read/38583731/development-and-validation-of-a-dried-blood-spots-assay-for-metabolic-profiling-of-ginsenosides-using-ultra-high-performance-liquid-chromatography-mass-spectrometry
#26
JOURNAL ARTICLE
Mengge Shi, Han Han, Li Yang, Zhengtao Wang, Kaixian Chen
ETHNOPHARMACOLOGICAL RELEVANCE: Panax ginseng C.A. Meyer., a famous and valuable traditional Chinese medicine with thousand years of history for its healthcare and therapeutic effects. It is necessary and meaningful to study the pharmacokinetic behavior of ginsenosides in vivo as they are the most active components. Dried blood spots (DBS) are a mature and advanced blood collection method with meet the needs for the measurement of numerous analytes. AIM OF THE STUDY: This study aimed to explore the feasibility on DBS in the metabolic profile analysis of complex herbal products...
April 5, 2024: Journal of Ethnopharmacology
https://read.qxmd.com/read/38582153/kai-xin-san-ameliorates-alzheimer-s-disease-related-neuropathology-and-cognitive-impairment-in-app-ps1-mice-via-the-mitochondrial-autophagy-nlrp3-inflammasome-pathway
#27
JOURNAL ARTICLE
Xiaoxiao Shan, Wenwen Tao, Junying Li, Wenkang Tao, Dawei Li, Lele Zhou, Xuan Yang, Chong Dong, Shunwang Huang, Xiaoqin Chu, Caiyun Zhang
ETHNOPHARMACOLOGICAL RELEVANCE: Kai-Xin-San (KXS) is a classic famous prescription that has been utilized for centuries to address dementia. New investigations have shown that the anti-dementia effect of KXS is connected with improved neuroinflammation. Nevertheless, the underlying mechanism is not well elucidated. AIM OF THE STUDY: We propose to discover the ameliorative impact of KXS on Alzheimer's disease (AD) and its regulatory role on the mitochondrial autophagy-nod-like receptor protein 3 (NLRP3) inflammasome pathway...
April 4, 2024: Journal of Ethnopharmacology
https://read.qxmd.com/read/38579531/integrated-assessment-of-potentially-toxic-elements-in-soil-of-the-kangdian-metallogenic-province-a-two-point-machine-learning-approach
#28
JOURNAL ARTICLE
Wantao Yang, Liankai Zhang, Bingbo Gao, Xiaojie Liu, Xingwu Duan, Chenyi Wang, Ya Zhang, Qiang Li, Lingqing Wang
The accumulation of potentially toxic elements in soil poses significant risks to ecosystems and human well-being due to their inherent toxicity, widespread presence, and persistence. The Kangdian metallogenic province, famous for its iron-copper deposits, faces soil pollution challenges due to various potentially toxic elements. This study explored a comprehensive approach that combinescombines the spatial prediction by the two-point machine learning method and ecological-health risk assessment to quantitatively assess the comprehensive potential ecological risk index (PERI), the total hazard index (THI) and the total carcinogenic risk (TCR)...
April 4, 2024: Ecotoxicology and Environmental Safety
https://read.qxmd.com/read/38579424/fluorescence-characteristics-and-main-fluorescence-component-in-burmese-chameleon-amber
#29
JOURNAL ARTICLE
Shiyi Li, Jinfeng Yang, Yan Li, Guanghai Shi, Qi Liu, Youzhi Liang, Yilei Feng
One special variety of Burmese amber is "chameleon" amber, named for the bluish-green colour that appears to float on its surface. This material is found in the famous Tengchong market in Yunnan Province, China's largest Burmese amber market. Its bodycolour ranges from golden brown to brownish-red or even red. When exposed to sunlight or strong white light against a black background, its surface shows a uniform green colour. This research presents the gemological properties, spectral characteristics and organic components of Burmese 'chameleon' amber...
March 28, 2024: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://read.qxmd.com/read/38575152/structural-features-of-the-porous-network-of-poly-urethane-aerogels-via-gas-permeability-measurements
#30
JOURNAL ARTICLE
Gerd-Sebastian Beyerlein, Lorenz Ratke
The permeability for gases through polyurethane (PUR) aerogels prepared from unsorted PUR scraps by means of a recycling technique is measured with a dynamic pressure method. The permeabilities are in the range of 10-15 to 10-13 m2 and thus reflect the pore morphology observed with scanning electron microscopy (SEM). The permeability depends on the envelope density and microstructural features of the aerogels and decreases with increasing inner surface area. The comparison of the permeability with the Porod constant, which is obtained independently via small angle X-ray scattering (SAXS), yields a high consistency with the expected theoretical relationship...
April 4, 2024: Macromolecular Rapid Communications
https://read.qxmd.com/read/38575140/resting-state-brain-networks-under-inverse-agonist-versus-complete-knockout-of-the-cannabinoid-receptor-1
#31
JOURNAL ARTICLE
Hui Li, Qiong Ye, Da Wang, Bowen Shi, Wenjing Xu, Shuning Zhang, Xiaoyang Han, Xiao-Yong Zhang, Garth J Thompson
The cannabinoid receptor 1 (CB1 ) is famous as the target of Δ9 -tetrahydrocannabinol (THC), which is the active ingredient of marijuana. Suppression of CB1 is frequently suggested as a drug target or gene therapy for many conditions (e.g., obesity, Parkinson's disease). However, brain networks affected by CB1 remain elusive, and unanticipated psychological effects in a clinical trial had dire consequences. To better understand the whole brain effects of CB1 suppression we performed in vivo imaging on mice under complete knockout of the gene for CB1 ( cnr1 -/- ) and also under the CB1 inverse agonist rimonabant...
April 4, 2024: ACS Chemical Neuroscience
https://read.qxmd.com/read/38572204/middle-aged-and-older-adults-in-aids-village-a-mixed-methods-study-on-talking-about-death-and-well-being-promotion-based-on-social-support-theory
#32
JOURNAL ARTICLE
Lin Zhang
INTRODUCTION: Will about talking about death bring well-being? This study aims to explore the impact of talking about death on the subjective well-being of the rural middle-aged and older adults in China's "Aids village" from five dimensions: the way of talking about death, the attitude towards talking about death, the objects of talking about death with, the frequency of talking about death and the content of the death talk, and investigate whether social support played a mediating role during this process...
2024: Frontiers in Psychology
https://read.qxmd.com/read/38570252/arousal-and-performance-revisiting-the-famous-inverted-u-shaped-curve
#33
JOURNAL ARTICLE
Sander Nieuwenhuis
Arousal level is thought to be a key determinant of variability in cognitive performance. In a recent study, Beerendonk, Mejías et al. show that peak performance in decision-making tasks is reached at moderate levels of arousal. They also propose a neurobiologically informed computational model that can explain the inverted-U-shaped relationship.
April 2, 2024: Trends in Cognitive Sciences
https://read.qxmd.com/read/38567035/uplc-ms-based-metabonomics-revealed-the-protective-effects-of-buyang-huanwu-decoction-on-ischemic-stroke-rats
#34
JOURNAL ARTICLE
Rou-Jun Wang, Guang-Chao Ma, Shun Yu, Mei Zhang, Shi-Biao Pu
OBJECTIVE: Storke is a leading cause of death and disability affecting million people worldwide, 80% of which is ischemic stroke (IS). Recently, traditional Chinese medicines (TCMs) have received great attentions in treating IS due to their low poisonous effects and high safety. Buyang Huanwu Decoction (BHD), a famous and classical Chinese prescription, has been used for treating stroke-induced disability for centuries. Yet, its underlying mechanism is still in fancy. METHODS: We first constructed an IS model by middle cerebral artery occlusion (MCAO)...
April 2024: Toxicology Research
https://read.qxmd.com/read/38565362/structural-identification-and-anti-neuroinflammatory-effect-of-a-heteropolysaccharide-atp50-3-from-acorus-tatarinowii-rhizome
#35
JOURNAL ARTICLE
Qian Yu, Xian Qiu, Jing Zhong, Chao Cao, Yuechan Liao, Zhiwei Zeng, Dawei Zhang, Chunyan Yan
Acorus tatarinowii, a famous traditional Chinese medicine, is used for the clinical treatment of memory impairment and dementia. In this research, AT50, the crude polysaccharide extracted from A. tatarinowii rhizome, significantly improved the memory and learning ability of mice with Alzheimer's disease (AD) and exerted excellent anti-neuroinflammatory effects. More importantly, AT50 returned the levels of NO, TNF-α, IL-1β, PGE-2, and IL-6 in AD mouse brains to normal levels. To identify the active ingredients in AT50, a heteropolysaccharide ATP50-3 was obtained from AT50...
March 31, 2024: International Journal of Biological Macromolecules
https://read.qxmd.com/read/38561772/cue-driven-microbial-cooperation-and-communication-evolving-quorum-sensing-with-honest-signaling
#36
JOURNAL ARTICLE
Tamás Czárán, István Scheuring, István Zachar, Szabolcs Számadó
BACKGROUND: Quorum sensing (QS) is the ability of microorganisms to assess local clonal density by measuring the extracellular concentration of signal molecules that they produce and excrete. QS is also the only known way of bacterial communication that supports the coordination of within-clone cooperative actions requiring a certain threshold density of cooperating cells. Cooperation aided by QS communication is sensitive to cheating in two different ways: laggards may benefit from not investing in cooperation but enjoying the benefit provided by their cooperating neighbors, whereas Liars explicitly promise cooperation but fail to do so, thereby convincing potential cooperating neighbors to help them, for almost free...
April 2, 2024: BMC Biology
https://read.qxmd.com/read/38560832/chirp-driven-control-over-fast-slow-light-effects-in-epsilon-near-zero-metamaterials
#37
JOURNAL ARTICLE
V B Novikov, A A Dotsenko, A P Leontiev, K S Napolskii, T V Murzina
Optical applications based on fast and slow light effects force the usage of metamaterials famous for their flexible dispersion properties. In this work, we apply the unique optical nonlocality of metal nanorod-based epsilon-near-zero (ENZ) metamaterials along with the chirp of femtosecond laser pulses for astonishing control of these effects. We demonstrate the switching between the fast and slow light phenomena via the change of the angle of incidence and/or the central wavelength of chirped pulses in the vicinity of metamaterial zero-transmission regime mediated by the ENZ nonlocality...
April 1, 2024: Optics Letters
https://read.qxmd.com/read/38559924/confinement-effect-in-metal-organic-framework-cu-3-btc-2-for-enhancing-shape-selectivity-of-radical-difunctionalization-of-alkenes
#38
JOURNAL ARTICLE
Mochen Li, Zhi Feng, Chunying Duan, Tiexin Zhang, Yusheng Shi
The radical difunctionalization of alkenes plays a vital role in pharmacy, but the conventional homogeneous catalytic systems are challenging in selectivity and sustainability to afford the target molecules. Herein, the famous readily available metal-organic framework (MOF), Cu3 ( BTC )2 , has been applied to cyano-trifluoromethylation of alkenes as a high-performance and recyclable heterogeneous catalyst, which possesses copper(II) active sites residing in funnel-like cavities. Under mild conditions, styrene derivatives and various unactivated olefins could be smoothly transformed into the corresponding cyano-trifluoromethylation products...
March 26, 2024: ACS Omega
https://read.qxmd.com/read/38559439/chemical-composition-and-antioxidant-activity-of-polygonatum-kingianum-processed-by-the-traditional-method-of-nine-cycles-of-steaming-and-sun-drying
#39
JOURNAL ARTICLE
Yanhui Guan, Zhengwei Liang, Ruoyu Li, Yunjiao Guo, Lingjing Dang, Fuming Gong, Susu Xu, Teng Wang, Nianguo Bo, Shengchao Yang, Weiwei Jiang, Guanghui Zhang, Ming Zhao, Junwen Chen
Polygonatum kingianum Coll. et (Hemsl) is a famous Chinese traditional food and medicine analogous plant. The rhizome of P. kingianum showed a decrease in levels of alkaloids, amino acids and derivatives, terpenoids, and an increase in organic acid and saccharides when it was processed by the traditional method of "Nine Cycles of Steaming and Sun-Drying". The relative content of 341 metabolites were increased (fold change, FC > 2; variable importance in projection, VIP > 1 and P-value , P  < 0...
June 30, 2024: Food chemistry: X
https://read.qxmd.com/read/38557351/the-art-of-resilience-a-psychobiography-of-frida-kahlo
#40
JOURNAL ARTICLE
Brittney Romagna
This psychobiography of Frida Kahlo explores the psychology of the famous Mexican artist. Drawing upon Kahlo's paintings and diary entries, a rich psychological analysis of the feminist icon is juxtaposed with the zeitgeist of 20th century Mexico. Framed through the theoretical model of feminist psychology, Kahlo's role in promoting gender equality and dismantling patriarchal society is discussed. Physical pain resulting from illness and impalement by a metal pole in a trolley accident was matched, if not exceeded, by the psychological pain the artist felt due to resulting issues with fertility and the long-sought but never-realized role of motherhood, infidelity within her marriage, and the eventual loss of her ability to paint...
2024: International Review of Psychiatry
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