Study of Process, Microstructure, and Properties of Double-Wire Narrow-Gap Gas Metal Arc Welding Low-Alloy Steel.

Narrow-gap arc welding is an efficient method that significantly enhances industrial production efficiency and reduces costs. This study investigates the application of low-alloy steel wire EG70-G in narrow-gap gas metal arc welding (GMAW) on thick plates. Experimental observations were made to examine the arc behavior, droplet transition behavior, and weld formation characteristics of double-wire welding under various process parameters.

Simultaneous determination of twelve microcystins in algal supplements on the Chinese market and possible risks to exposed populations.

Algae supplements are widely recognized for their nutritional benefits and are commonly marketed as natural health products. However, concerns regarding contamination with cyanobacterial toxins have been raised. Moreover, there is very little data regarding the potential contamination of algal supplements on the Chinese market by these toxins.

Ubiquitination of OsCSN5 by OsPUB45 activates immunity by modulating the OsCUL3a-OsNPR1 module.

The COP9 signalosome (CSN) is a highly conserved protein complex in eukaryotes, with CSN5 serving as its critical catalytic subunit. However, the role of CSN5 in plant immunity is largely unexplored. Here, we found that suppression of in rice enhances resistance against the fungal pathogen and the bacterial pathogen pv.

Antimicrobial and Remineralization of Carboxymethyl Chitosan and Xylitol Functionalized Carbon Dots Coating on Orthodontic Brackets.

Purpose: During fixed orthodontic treatment, oral hygiene is difficult to ensure and can easily lead to an imbalance in the oral micro-ecological balance. In this study, based on the adhesive properties of polydopamine (PDA) and the good antimicrobial and remineralization properties of carboxymethyl chitosan (CMC) and xylitol (Xy), new nanocomposites with both antimicrobial and remineralization capabilities were prepared to coat on orthodontic brackets.

Methods: Composite carbon dots (CDs) were synthesized using carboxymethyl chitosan and xylitol, we characterized them and the antimicrobial properties of the CMC-Xy-CDs were investigated by co-cultivation with S.

Knockdown of RFC4 inhibits cell proliferation of oral squamous cell carcinoma in vitro and in vivo.

Oral squamous cell carcinoma (OSCC) is the one of the most common types of malignant tumor found in the head and neck area. Replication factor C subunit 4 (RFC4), an oncogene active in various human cancers, has been rarely studied in OSCC. In the present study, bioinformatics analysis identified RFC4 as a potential key target in OSCC progression.

Deciphering the climate-malaria nexus: A machine learning approach in rural southeastern Tanzania.

Objectives: Malaria remains a critical public health challenge, especially in regions like southeastern Tanzania. Understanding the intricate relationship between environmental factors and malaria incidence is essential for effective control and elimination strategies.

Study Design: Cohort study.

The 1,7-malaria reactive community-based testing and response (1,7-mRCTR) approach in Tanzania: a cost-effectiveness analysis.

Background: Reactive case detection (RACD) for malaria control has been found effective in low transmission settings, but its impact and cost-effectiveness in moderate-to-high transmission settings are unknown. We conducted an economic evaluation alongside an empirical trial of a modified RACD strategy (1,7-mRCTR) in three moderate-to-high malaria transmission districts in Tanzania.

Methods: The costs and cost savings associated with the intervention relative to passive case detection alone were estimated in the study sites of Kilwa, Kibiti, and Rufiji districts in Tanzania from 2019-2021.

Genetic improvement of eating and cooking quality of rice cultivars in southern China.

The genetic improvement of rice eating and cooking quality (ECQ) is an important goal in rice breeding. It is important to understand the genetic regulation of ECQ at the genomic level for effective breeding to improve ECQ. However, the mechanisms underlying the improvement of ECQ of indica and japonica cultivars in southern China remain unclear.

Small prostate associated with higher incidence of detrusor underactivity and tendency of combination with bladder stone in patients with bladder outlet obstruction.

Benign prostate hyperplasia is the leading cause of lower urinary tract symptoms due to bladder outlet obstruction (BOO) in elderly male patients. The impact of prostate volume (PV) on clinical and urodynamic characteristics was evaluated in those patients with BOO requiring prostate de-obstruction maneuvers in this study. We retrospectively reviewed the clinical data of 301 patients underwent transurethral resection of prostate due to combination with urinary retention (UR) alone and bladder stone (BS) alone.

Transgenic rice with microbial high-temperature-resistant β-glucosidase gene significantly improved 2-acetyl-1-pyrroline content and edible quality.

Background: The content of 2-acetyl-1-pyrroline (2-AP) directly affects the aroma and taste of rice. Δ1-Pyrroline and methylglyoxal are the precursors of 2-AP synthesis, and β-glucosidase plays an important role in the synthesis of methylglyoxal. In this study, β-glucosidase gene cloned from Pyrococcus furiosus was molecularly modified to obtain the high-temperature-resistant β-glucosidase gene 371-β-glucosidase (T371A), which was transformed into kitaake varieties (Oryza sativa L.

Comprehensive single-cell profiling of monocytes in HLA-B27-positive ankylosing spondylitis with acute anterior uveitis.

Acute anterior uveitis (AAU) is a common extra-articular manifestation of ankylosing spondylitis (AS), particularly in patients positive for the human leucocyte antigen (HLA)-B27 genetic marker. To explore the underlying mechanisms of HLA-B27 AS-associated AAU, we employed single-cell RNA sequencing to profile the transcriptomes of peripheral blood mononuclear cells in three HLA-B27 AS-associated AAU patients and three healthy controls (HCs). We identified 11 distinct immune cell clusters, with a particular focus on monocytes, revealing six subsets, including three previously unidentified subsets, namely, GTPase immune-associated proteins, Th17-related, and lncRNA monocytes, with unique gene expression patterns.

Lignin valorization to bioplastics with an aromatic hub metabolite-based autoregulation system.

Exploring microorganisms with downstream synthetic advantages in lignin valorization is an effective strategy to increase target product diversity and yield. This study ingeniously engineers the non-lignin-degrading bacterium Ralstonia eutropha H16 (also known as Cupriavidus necator H16) to convert lignin, a typically underutilized by-product of biorefinery, into valuable bioplastic polyhydroxybutyrate (PHB). The aromatic metabolism capacities of R.

Two new hypogean species of the genus (Osteichthyes, Cypriniformes, Nemacheilidae) from Guizhou Province, Southwest China, with underestimated diversity.

Two new species of the genus from southwestern Guizhou Province, China, are described. These are Wu, Luo, Xiao & Zhou, and Lan, Liu, Zhou & Zhou, from Maoying Town, Ziyun County, Guizhou Province, China. Wu, Luo, Xiao & Zhou, is distinguished from other hypogean species of the genus by having a combination of the following characteristics: body naked, scaleless, pigmented markings on surface of body, except ventral; eyes reduced, diameter 2.

 (Cypriniformes, Cyprinidae), a new cave fish with extremely small population size from western Guizhou, China.

This study describes a new species, ., discovered within a cave located in Hongguo Town, Panzhou City, Guizhou Province, southwestern China, with the type locality in the Nanpanjiang River basin. Phylogenetic trees reconstructed based on mitochondrial genes show that the new species represents an independent evolutionary lineage with large genetic differences, 1.

Anticancer effects of tanshinone IIA in bladder urothelial carcinoma by down-regulating aurora A, HIF-1α and Bcl-2 both in vitro and in vivo.

The mechanisms of the anticancer effect of Tanshinone IIA (Tan IIA) on Bladder urothelial carcinoma (BUC) remain mostly unknown. In this study, BUC T24 cells were treated with Tan IIA at different concentrations and durations. The apoptosis, proliferation and invasion of T24 cells were evaluated using MTT assays, Annexin V-FITC Staining, Hoechst staining and Trans well assay.

Population genetics and evolutionary history of the intertidal brittle star in the northern China Sea.

is a common brittle star in the northwestern Pacific. As a dominant species, inhabiting the intertidal rocky ecosystem are affected by multiple environmental stressors, but molecular insights into their genetic population structure remain poorly studied. In this study, we investigated the population genetics and evolutionary history of six populations from the northern China Sea using mitochondrial (, ) and nuclear (, ) gene markers.

The IS-ORF2--(X4) circular intermediate-mediated transmission of tigecycline resistance in isolates from duck farms.

Tigecycline is a last-resort drug used to treat serious infections caused by multidrug-resistant bacteria. (X4) is a recently discovered plasmid-mediated tigecycline resistance gene that confers high-level resistance to tigecycline and other tetracyclines. Since the first discovery of (X4) in 2019, it has spread rapidly worldwide, and as a consequence, tigecycline has become increasingly ineffective in the clinical treatment of multidrug-resistant infections.

Oreonectes yuedongensis (Cypriniformes, Nemacheilidae), a new freshwater fish species from the Lianhua Mountains in eastern Guangdong, China.

In this work, we describe a new species of the genus Oreonectes, Oreonectes yuedongensis sp. nov., collected from the Lianhua Mountains in eastern Guangdong, China.

Effects of different HA and NA gene combinations on the growth characteristics of the H3N8 influenza candidate vaccine virus.

Since 2022, three human cases of a novel H3N8 avian influenza virus infection have been reported in three provinces in China. Specific vaccines are important means of preparing for the potential influenza pandemic. Thus, H3N8 viruses [A/Henan/cnic410/2022 (HN410) and A/Changsha/1000/2022(CS1000)] were isolated from the infected patients as prototype viruses to develop candidate vaccine viruses (CVVs) using the reverse genetics (RG) technology.

Unexpected antagonism of deoxynivalenol and enniatins in intestinal toxicity through the Ras/PI3K/AKT signaling pathway.

Deoxynivalenol (DON) is a kind of widespread traditional Fusarium mycotoxins in the environment, and its intestinal toxicity has received considerable attention. Recently, the emerging Fusarium mycotoxin enniatins (ENNs) have also been shown to frequently coexist with DON in animal feed and food with large consumption. However, the mechanism of intestinal damage caused by the two mycotoxins co-exposure remains unclear.

UPLC-MS/MS-Based Target Screening of 90 Phosphodiesterase Type 5 Inhibitors in 5 Dietary Supplements.

The aim of individuals consuming health supplements is to attain a robust state through nutritional regulation. However, some unscrupulous manufacturers, motivated by profit, fraudulently incorporate drugs or unauthorized components with therapeutic effects into the product for instant product performance enhancement. The long-term use of these products may inadvertently inflict harm on human health and fail to promote nutritive healthcare.

Eco-friendly one-step egg white gel preparation for sensitive detection of 13 trichothecenes in oats using UHPLC-MS/MS.

Oat products have gained widespread recognition as a health food due to their rich and balanced nutritional profile and convenience. However, the unique matrix composition of oats, which differs significantly from other cereals, presents specific challenges for mycotoxin analysis. This study presents an ultrahigh-performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) method enhanced with an innovative egg white gel pretreatment for the simultaneous analysis of 13 regulated and unregulated trichothecenes in oats.

A Light-Powered Synthetic Enzymatic Biosystem for the Synthesis of 3-Hydroxypropionic Acid via CO Fixation.

3-Hydroxypropionic acid (3-HP) is a highly sought-after platform chemical serving as a precursor to a variety of high value-added chemical products. In this study, we designed and constructed a novel light-powered synthetic enzymatic biosystem comprising acetyl-CoA ligase, acetyl-CoA carboxylase, malonyl-CoA reductase, and phosphotransferase to efficiently produce 3-HP through CO fixation from acetate, a cost-effective and readily available substrate. The system employed natural thylakoid membranes (TMs) for the regeneration of adenosine triphosphate and nicotinamide adenine dinucleotide phosphate.

Pharmacokinetic study of Q808 in rhesus monkey using liquid chromatography-tandem mass spectrometry.

Background: Q808 is a novel antiepileptic agent currently in development. In this study, we established and validated a LC-MS/MS method for the quantification of Q808 in Rhesus monkey plasma. Furthermore, we applied this method to investigate the pharmacokinetics of Q808 in Rhesus monkeys.