Comparative transcriptome profiling reveals the mechanism of increasing lysine and tryptophan content through pyramiding , and genes in maize.

To explore the molecular mechanism behind maize grain quality and use of different gene stacking to improve the nutritional quality of grain, marker-assisted selection (MAS) was used to select three recessive mutant lines containing , along with the double-recessive mutant lines containing , , and . The resulting seeds were taken for transcriptome sequencing analysis 18 days after pollination (DAP). Results: Compared with the recurrent parent genes, in the lysine synthesis pathway, the gene pyramiding lines (, , and ) revealed that the gene encoding aspartate kinase (AK) was up-regulated and promoted lysine synthesis.

Culture and political regimes: How have they influenced the effectiveness of COVID-19 response policy?

This study investigates the efficacy of national emergency response policies in addressing the COVID-19 pandemic and their interactions with cultural and political factors. Employing the synthetic control method, we analyze data from countries on five continents that implemented such policies in early 2020. Our results indicate the overall effectiveness of these policies in mitigating the impact of COVID-19 yet reveal significant variability in their outcomes among countries.

Study on the Application Effect of Nursing Intervention Based on the Transtheoretical Model in the Rehabilitation Treatment of Patients with Chronic Heart Failure.

Objective: To analyze the application effect of nursing intervention based on the Transtheoretical Model in rehabilitating patients with chronic heart failure (CHF).

Methods: A retrospective analysis of clinical data was conducted for 156 CHF patients admitted to our hospital from May 2019 to September 2022. All patients met the complete inclusion criteria.

Dual carbon and void space confined SiO/C@void@Si/C yolk-shell nanospheres with high-rate performances and outstanding cyclability for lithium-ion batteries anodes.

Silicon-based anode materials with high theoretical capacity have great challenges of enormous volume expansion and poor electronic conductivity. Herein, a novel dual carbon confined SiO/C@void@Si/C yolk-shell monodisperse nanosphere with void space have been fabricated through hydrothermal reaction, carbonization, and in-situ low-temperature aluminothermic reduction. Furthermore, the O/Si ratio and void space between SiO/C core and Si/C shell can be effectively tuned by the length of aluminothermic reduction time.

Infrared Spectra of the 1-Methylvinoxide Radical and Anion Isolated in Solid Argon.

The 1-methylvinoxy radical (1-MVO) is an important intermediate in the combustion and tropospheric reaction of OH. However, the vibrational structures of this species and its anionic form, 1-methylvinoxide anion (1-MVO), are not fully known. Thus, in this study, we obtained the infrared (IR) absorption spectra of 1-MVO and 1-MVO trapped in a solid Ar matrix.

Direct IR Absorption Spectra of Propargyl Cation Isolated in Solid Argon.

The direct infrared (IR) absorption spectra of propargyl cations were recorded. These cations were generated via the electron bombardment of a propyne/Ar matrix sample during matrix deposition. Secondary photolysis with selected ultraviolet (UV) light was used for grouping the observed bands of various products.

Reexamining Dis/Similarity-Based Tests for Rare-Variant Association with Case-Control Samples.

A properly designed distance-based measure can capture informative genetic differences among individuals with different phenotypes and can be used to detect variants responsible for the phenotypes. To detect associated variants, various tests have been designed to contrast genetic dissimilarity or similarity scores of certain subject groups in different ways, among which the most widely used strategy is to quantify the difference between the within-group genetic dissimilarity/similarity (, case-case and control-control similarities) and the between-group dissimilarity/similarity (, case-control similarities). While it has been noted that for common variants, the within-group and the between-group measures should all be included; in this work, we show that for rare variants, comparison based on the two within-group measures can more effectively quantify the genetic difference between cases and controls.