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Neville Hedrick posted an update 1 day, 16 hours ago
The equation of cminR is to calculate the minimum cR (c curvature, R radius of trunk) below which cracking failure will not occur, and the equation of ccriR is to calculate the critical cR which represents equal opportunities for cracking and bending failure of the stem to occur. To exert our model to practice, the equations derived in this paper were applied to literature data (Wood handbook, 1999). From the data of 41 species of softwood and 48 species of hardwood, statistically, hardwoods have larger average values of cminR and ccriR than softwoods which means that hardwoods are more resistant to cracking failure than softwoods.Proboscises of many fluid-feeding insects share a common architecture they have a partially open food canal along their length. This feature has never been discussed in relation to the feeding mechanism. We formulated and solved a fluid mechanics model of fluid uptake and estimated the time required to completely fill the food canal of the entire proboscis through the openings along its length. Butterflies and moths are taken as illustrative and representative of fluid-feeding insects. We demonstrated that the proposed mechanism of filling the proboscis with fluid through permeable lengthwise bands, in association with a thin film of saliva in the food canal, offers a competitive pathway for fluid uptake. Tepotinib concentration Compared with the conventional mechanism of fluid uptake through apically restricted openings, the new mechanism provides a faster rate of fluid uptake, especially for long-tongued insects. Accordingly, long-tongued insects with permeable lengthwise bands would be able to more rapidly exploit a broader range of liquids in the form of films, pools, and discontinuous columns, thereby conserving energy and minimizing exposure to predators, particularly for hovering insects.In addiction, apparently causally significant phenomena occur at a huge number of levels; addiction is affected by biomedical, neurological, pharmacological, clinical, social, and politico-legal factors, among many others. In such a complex, multifaceted field of inquiry, it seems very unlikely that all the many layers of explanation will prove amenable to any simple or straightforward, reductive analysis; if we are to unify the many different sciences of addiction while respecting their causal autonomy, then, what we are likely to need is an integrative framework. In this paper, we propose the theory of “Externalist” or “4E” – for extended, embodied, embedded, and enactive – cognition, which focuses on the empirical and conceptual centrality of the wider extra-neural environment to cognitive and mental processes, as a candidate for such a framework. We begin in Section 2 by outlining how such a perspective might apply to psychiatry more generally, before turning to some of the ways it can illuminate addiction in particular Section 3 points to a way of dissolving the classic dichotomy between the “choice model” and “disease model” in the addiction literature; Section 4 shows how 4E concepts can clarify the interplay between the addict’s brain and her environment; and Section 5 considers how these insights help to explain the success of some recovery strategies, and may help to inform the development of new ones.Westerners show a strong tendency to view themselves in a positive light (i.e., self-enhancement), but this tendency is substantially weaker among East Asians. At present, however, it remains inconclusive whether this cultural difference reflects genuine variation in spontaneous engagement in this motivational tendency or is driven by individuals’ deliberate efforts to present oneself in culturally acceptable ways. In the present research, we sought to address this issue by examining whether culture modulates early attentional bias to self-name, presented in the context of positive (vs. negative) situations. Both European American and Asian American participants (N = 64) read a series of scenarios depicting either a positive or a negative life situation and were subsequently presented with their name or names of famous people or strangers. European Americans showed greater P2, an ERP component of early attentional arousal, when the self-name was primed with positive (vs. negative) situations. In contrast, Asian Americans’ P2 in response to the self-name was not moderated by situation primes. Moreover, the degree to which P2 was enhanced in positive (vs. negative) situations was negatively correlated with Asian cultural values. These results demonstrate that cultural variation in self-enhancement may reflect genuine beliefs about the self, manifested automatically at an early stage of attentional processing.Protein topology engineering has emerged as a new dimension to alter protein stability and function. Inspired by the art of nature, where backbone cyclization is frequently adopted to enhance the stability of natural peptide products and thermostable enzymes; herein, we report protein topology engineering of an industrial thermolabile gamma lactamase via catenation. Two different protein catenanes were successfully constructed via SpyTag/SpyCatcher modules and two different peptide dimer domains. The designed protein catenanes were functionally synthesized in Escherichia coli. A comparison of their biochemical properties revealed that protein topology played a key role in the stability of gamma lactamase. Protein catenation enhanced both the thermo- and proteolytic stabilities of gamma lactamase. Gamma lactamase was stabilized by ∼8 °C in one of the catenated forms. Moreover, Cat1-MhIHL-V54L and Cat2-MhIHL-V54L displayed 1.8- and 2.4-fold higher enzyme efficiencies (Kcat/Km), respectively, than the unattenuated enzyme. Therefore, our results proved that protein catenane construction could be a general strategy to strengthen industrial biocatalysts by mechanisms distinct from those of the conventional direct evolution schemes, whereby our results offer wide applications in the fine chemical industry.
Normal/mildly elevated ALT (<2×ULN) CHB patients are potentially at risk of progression to cirrhosis and/or hepatocellular carcinoma (HCC). We aimed to assess the outcomes of anti-viral therapy for normal/mild elevation of ALT CHB patients.
CHB patients (n=432)who have had liver biopsied were determined. It was determined that the outcomes of anti-viral therapy in CHB patients with normal/mild elevation of ALT, in response to nucleoside/nucleotide analogues (NAs) (n=190) and pegylated interferon (PEG-IFN) (n=30) treatment for up to 72 weeks. Non-anti-viral treated patients were used as control (n=40).
There was about 50% of the CHB patients showed hepatic inflammatory necrosis≥G2 and/or fibrosis≥S2 among >30-years-old. The rate of undetectable HBV DNA in NAs and PEG-IFN groups was ~50%, ~80% or ~90% at week 24, 48 or 72, respectively. HBeAg clearance rate was lower in NAs treated than that in PEG-IFN group at week 48 (6% vs 20%, P<0.05). ALT normalization rate was increased by 1.18-fold at week 72.