Search for gravitational waves associated with gamma-ray bursts detected by Fermi and Swift during the LIGO–Virgo run O3b

We search for gravitational-wave signals associated with gamma-ray bursts (GRBs) detected by the Fermi and Swift satellites during the second half of the third observing run of Advanced LIGO and Advanced Virgo (2019 November 1 15:00 UTC–2020 March 27 17:00 UTC). We conduct two independent searches: a generic gravitational-wave transients search to analyze 86 GRBs and an analysis to target binary mergers with at least one neutron star as short GRB progenitors for 17 events. We find no significant evidence for gravitational-wave signals associated with any of these GRBs. A weighted binomial test of the combined results finds no evidence for subthreshold gravitational-wave signals associated with this GRB ensemble either. We use several source types and signal morphologies during the searches, resulting in lower bounds on the estimated distance to each GRB. Finally, we constrain the population of low-luminosity short GRBs using results from the first to the third observing runs of Advanced LIGO and Advanced Virgo. The resulting population is in accordance with the local binary neutron star merger rate

Isozymes of rat muscle pyruvate kinase

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Are post-menopausal women "half-a-man"?: Sexual beliefs, attitudes and concerns among midlife Chinese women

The objective of this study was to explore the concerns and issues specific to sexual behaviors and interests among postmenopausal women in a metropolitan urban city in Southern China. This was a qualitative study using semi-structured focus group discussions (FGDs). Twenty-two informants aged 50 and above recruited through an ongoing research project on early post-menopausal women under the purview of the School of Public Health at the Chinese University of Hong Kong. The main outcome measures were themes identified as health concerns towards sex among post-menopausal women. Contrary to prior expectations and stereotypes, we found that the respondents were very open in discussing their sexual concerns and shared extensively from their personal experiences. Our respondents perceived significant differences in sexual needs between older men and women. Many respondents identified the effects of menopause and general health problems, as well as environmental limitations and communication problems between spouses as barriers to healthy sexual relationships within their marriages. Conversely, sexual disharmony was seen as an important cause of marital strife among older couples. There is a growing need in studying health concerns among the fast-growing, Chinese middle-aged and older population. Our qualitative study revealed a wide gap in the knowledge regarding general and sexual health issues among post-menopausal Chinese women. Raising awareness among health professionals of these issues is essential in addressing health concerns regarding this traditionally taboo subject within the Chinese context. Copyright © Taylor & Francis Group, LLC.link_to_subscribed_fulltex

Regulation of pyruvate kinase in Reuber H35 hepatoma cells by insulin and fructose

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Studies on the regulation of hepatic pyruvate kinase synthesis in neonatal rats

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Sarcoplasmic reticulum-bound pyruvate kinase in rat skeletal muscl

1. 1. Sarcoplasmic reticulum isolated from rat thigh muscle was found to contain a small amount (0.8%) of M 1-type pyruvate kinase which could be dissociated by a broad spectrum of substances. 2. 2. This binding was maximal at neutral or slightly acidic pH and mediated through non-specific ionic interaction. 3. 3. It is not probable that the binding plays any physiological role in regulating the activity of the enzyme. © 1980.link_to_subscribed_fulltex

The HIV related risks among men having sex with men in rural Yunnan, China: a qualitative study

Objectives: To explore the characteristics and issues specific to HIV related risk behaviours among men who have sex with men (MSM) in rural China. Method: Qualitative study using semistructured in-depth interviews in Dali prefecture, Yunnan. 24 informants recruited through a local MSM network, snowballing and byword of mouth. The main outcome measures were themes identified as increased exposures and risks to HIV. Results: Risk behaviour, social stigma, one child policy and concepts of traditional Chinese medicine (TCM) had significant roles in the spread of HIV in rural China. Many MSM lead a life with double identities in China and condom use was found to be variable with attempts to "rationalise" the risky behaviour being its major determining factor. Health seeking behaviours of genitourinary problems were infrequent and illogical, which were further held back by the existing healthcare system and lack of sensitivity expressed by the health professionals. Conclusions: Clear education messages to the general public while raising awareness among health professionals of the health risks and needs in MSM are essential in the prevention of the current HIV epidemic.link_to_OA_fulltex