Publications by authors named "Chun Hua Yang"

DNA Subway makes bioinformatic analysis of DNA barcodes classroom friendly, eliminating the need for software installations or command line tools. Subway bundles research-grade bioinformatics software into workflows with an easy-to-use interface. This chapter covers DNA Subway's DNA barcoding analysis workflow (Blue Line) starting with one or more Sanger sequence reads.

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Aim: To predict cutting formula of small incision lenticule extraction (SMILE) surgery and assist clinicians in identifying candidates by deep learning of back propagation (BP) neural network.

Methods: A prediction program was developed by a BP neural network. There were 13 188 pieces of data selected as training validation.

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A Rh-catalyzed regioselective, stereoselective carbocyclization/borylation of acrylate-containing 1,6-enynes was described, which offers a general and practical method for constructing versatile and densely functionalized pyrrolidines with the () geometry or the uncommon () geometry at the double bond with different substituents of the alkyne, with sterically hindered and conjugative aryl groups favoring the latter, featuring a tetrasubstituted vinyl boronate, containing an all-carbon quaternary stereocenter.

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This study investigated the effects of extrusion on the physical properties of glutinous rice and addressed the challenges associated with its hardened texture and reduced taste in glutinous rice products by adding extruded glutinous rice to assess their anti-retrogradation effect compared with different improvers. Glutinous rice flour with different gelatinization degrees was obtained by changing the initial moisture content of glutinous rice grains before extrusion, and their physicochemical properties and the effect of adding them to rice products were analyzed. Results showed that with the increase in moisture content, the viscosity, water absorption index of extruded glutinous rice flour, and product viscosity increased, while the gelatinization degree, water solubility index, and product elasticity decreased, and the hardness of the rice products showed a trend of first decreasing and then increasing.

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Two-dimensional photocatalytic materials with unique properties have been well-reported in recent decades. However, strategies for controlling the photocatalytic process are still ongoing. Herein, Janus XPAs (X = Si, Ge and Sn) monolayers have been explored by first-principles calculations to meet this challenge.

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Defense against ultraviolet (UV) radiation exposure is essential for survival, especially in high-elevation species. Although some specific genes involved in UV response have been reported, the full view of UV defense mechanisms remains largely unexplored. Herein, we used integrated approaches to analyze UV responses in the highest-elevation frog, .

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A Co-catalyzed reductive cyclization of acrylate-containing 1,6-enynes is reported, providing an approach to construct five-membered carbocyclic and heterocyclic scaffolds containing enol ethers and all-carbon quaternary carbons. This novel process enables an / mixture of 1,6-enynes to react with good functional group tolerance and good isolated yields, in an operationally simple manner.

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A Pd-catalyzed borylsilylative cyclization of 1,6-allenynes with PhMeSiBpin was developed. This method provides a practical and general method to afford the carbocycles and heterocycles bearing silyl and boryl groups with excellent regioselectivities and stereoselectivities in high to excellent yields.

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Article Synopsis
  • Current therapies for ischemic stroke are limited, but ginkgolides, particularly through a compound called diterpene ginkgolides meglumine injection (DGMI), show potential for neurological improvement in stroke patients despite the lack of extensive evidence.
  • A study using RNA sequencing identified ginkgolides' potential antiplatelet and neuroprotective effects, with the strongest response observed in certain cell models, suggesting their beneficial role in stroke-related conditions.
  • Further experiments demonstrated that ginkgolides (specifically GB and GK) protect against demyelination and promote regeneration of nerve cells, highlighting their promise for developing therapies that support remyelination and mitigate stroke progression.
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A metal-free intramolecular borylative cyclization of 1,6-allenynes driven by BCl was developed. This method provides a general and practical strategy to construct valuable pyrrolidines containing all-carbon quaternary centers or 3,5-dihydroazepine derivatives depending on the substituents of the allene, with conjugative and sterically hindered phenyl groups favoring the latter.

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A metal-free intramolecular aminophosphination of sulfonamidoallenes with diarylphosphine oxides and TfO was developed. This method offers a general and practical procedure to construct valuable alkenylphosphine-substituted N-heterocycles via the bifunctionalization reaction of allenes in good yields under mild conditions.

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Article Synopsis
  • Researchers successfully used BCl as a boron source to promote the direct aminoboration of sulfonamidoallenes, producing various borylvinyl heterocycles with good yields.* -
  • The reactions showed high stereoselectivity when chiral substrates were used, confirmed by single-crystal X-ray diffraction.* -
  • The resulting borylvinyl compounds can be easily modified through oxidation, halogenation, and Suzuki coupling, allowing for the synthesis of different functionalities.*
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Baicalin is a flavonoid extracted from and shows a variety of biological activities as reducing lipids, diminishing inflammation, and inhibiting bacterial infection. However, there is no report of baicalin against CVB3 infection. In this study, we found that baicalin can reduce viral titer in a dose-dependent manner at a dose with no direct virucidal effect.

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A catalyst-free method for the highly regioselective chloroboration of allenylsilanes is described. In the presence of BCl and 2,6-lutidine, chloroboration of allenylsilanes proceeds smoothly without any catalyst, and the product could be treated with pinacol to afford the corresponding pinacol borates in one-pot reaction. This reaction provides a direct approach to construct valuable 2-silylallylboronate frameworks with operational simplicity and high atom-economy.

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A direct and convenient approach for the coupling of propargylic substrates with diphenylphosphine oxide in the presence of TfO and 2,6-lutidine has been developed. The method provides a general approach for the construction of attractive allenylphosphoryl skeletons with high atom and step economy under metal free conditions.

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Insertion and deletion markers (InDels) have gained considerable attentions in population genetics and forensic research. In this study, we investigated genetic distributions of 30 InDels in Gansu Yugur and Guizhou Miao groups and evaluated their forensic application values. Genetic relationship analyses between Gansu Yugur, Guizhou Miao groups and other published populations were conducted based on these 30 InDels.

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A reduction of quinolines to synthetically versatile tetrahydroquinoline molecules with I and HBpin is described. In the presence of iodine (20 mol%) as a catalyst, reduction of quinolines and other N-heteroarenes proceeded readily with hydroboranes as the reducing reagents. The broad functional-group tolerance, good yields and mild reaction conditions imply high practical utility.

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Article Synopsis
  • A new method called direct and catalyst-free annulative thioboration allows for the simultaneous addition of a boryl group and thiol group to unfunctionalized olefins.
  • This process uses BCl as the only source of boron, making it more straightforward than previous methods.
  • The resulting boronic acids can be easily protected to create versatile pinacol boronate esters for further use in synthesis.
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  • - A study analyzed genetic diversity in 125 blood samples from the Bai group in Yunnan, China, using 30 insertion/deletion loci, revealing a range of heterozygosity between 0.1520 and 0.5680.
  • - The results showed no significant deviations from Hardy-Weinberg equilibrium, indicating reliability, and suggested that these loci are effective for paternity testing and personal identification in forensic cases, with high cumulative probabilities.
  • - Additionally, the Bai group exhibited close genetic relationships with Tibetan, Yi, and Han groups, but further DNA genotyping is recommended for a deeper understanding of Bai ethnicity's genetic background.
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Results on the relationship between CTLA4 -318C/T (rs5742909) gene polymorphism and risk of acute rejection in renal transplantation are still conflicting. This meta-analysis was performed to update the association between CTLA4 -318C/T and risk of acute rejection in renal transplantation. The association investigations were identified from PubMed and Cochrane Library, and eligible studies were included and synthesized using meta-analysis method.

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The conclusions on the association between cytotoxic T-lymphocyte antigen 4 (CTLA4) +49A/G gene polymorphism and acute rejection risk in renal transplantation are still debated. This meta-analysis was performed to update the association between CTLA4 +49A/G and acute rejection risk in renal transplantation. The association investigations were identified from PubMed and Cochrane Library, and eligible studies were included and synthesized using meta-analysis method.

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  • The study focused on the genetic variations of mitochondrial DNA in the Chinese Xibe ethnic minority, analyzing 54 variants among 137 healthy volunteers.
  • Among the findings, 51 variable positions were identified, with single nucleotide transitions being predominantly common, leading to the identification of 64 distinct mtDNA haplotypes.
  • The Xibe group showed significant genetic diversity and a close relationship with neighboring ethnic groups, indicating historical influences, while also suggesting potential use of these genetic markers for forensic and population genetics.
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  • The article discusses the retraction of a paper by Chun-Hua Yang and Tian-Biao Zhou regarding the link between a specific gene polymorphism and the risk of developing diabetic nephropathy, which was published in 2015.
  • The retraction was initiated by the journal's Editors and Publisher due to the revelation that the authors had provided fabricated contact information for reviewers, compromising the integrity of the peer review process.
  • Multiple articles authored by the same individuals have also been retracted for the same reason, indicating a serious issue within the peer review system of the Journal of Renin-Angiotensin-Aldosterone System.
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This article has been included in a multiple retraction: Chun-Hua Yang and Tian-Biao Zhou Association of the ACE I/D gene polymorphism with sepsis susceptibility and sepsis progression Journal of Renin-Angiotensin-Aldosterone System 1470320314568521, first published on February 3, 2015 doi: 10.1177/1470320314568521 This article has been retracted at the request of the Editors and the Publisher. After conducting a thorough investigation, SAGE found that the submitting authors of a number of papers published in the Journal of the Renin-Angiotensin Aldosterone System ( JRAAS) (listed below) had supplied fabricated contact details for their nominated reviewers.

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The regional features, metallogenitic regularities and mineral composition of the hydrothermal sulphide ore have been preliminarily studied. According to the different mineralization period, the patterns of valuable minerals disseminated in ore are complicated, which causes the large changes in the properties of the sulphide ore. The different properties of the sulphide ore may increase the difficulty of the mineral processing and reduce the recovery rate of valuable minerals.

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