Effect of accumulated temperature before overwintering on wheat seedling growth status in north winter wheat area of China.

To explore the impacts of global climate change on the suitable sowing date for winter wheat in north winter wheat area of China, we carried out a wheat sowing date experiment during growing seasons of 2019-2021 at the Beijing Experimental Base of the Institute of Crop Sciences, CAAS. Two winter wheat cultivars with different tillering powers were selected as experimental materials. Four different sowing dates were set: September 25th (J), October 5th (S0), October 15th (S1) and October 25th (S2), to examine the responses of population quality, individual characters, and stem and tiller physiology to the accumulated temperature difference before overwintering.

Food Sources May Affect the Symptom Rates of COVID-19, an Epidemiological Analysis Based on the Public Data in Gansu Province, China, During the Summer Epidemic Cycle in 2022.

According to the public data collected from the Health Commission of Gansu Province, China, regarding the COVID-19 pandemic during the summer epidemic cycle in 2022, the epidemiological analysis showed that the pandemic spread stability and the symptom rate (the number of confirmed cases divided by the sum of the number of asymptomatic cases and the number of confirmed cases) of COVID-19 were different among 3 main epidemic regions, Lanzhou, Linxia, and Gannan; both the symptom rate and the daily instantaneous symptom rate (daily number of confirmed cases divided by the sum of daily number of asymptomatic cases and daily number of confirmed cases) in Lanzhou were substantially higher than those in Linxia and Gannan. The difference in the food sources due to the high difference of the population ethnic composition in the 3 regions was probably the main driver for the difference of the symptom rates among the 3 regions. This work provides potential values for prevention and control of COVID-19 in different regions.

Effects of VEGF Inhibitor Conbercept on Corneal Neovascularization Following Penetrating Keratoplasty in Rabbit Model.

Purpose: To evaluate the effects of the vascular endothelial growth factor inhibitor conbercept (KH902) on corneal neovascularization and wound healing following penetrating keratoplasty in rabbits.

Methods: Conbercept was administered to New Zealand white rabbits through topical and subconjunctival routes. Corneal neovascularization and wound healing were examined by slit-lamp photography and histological analyses.

Updates on the Management of Ocular Vasculopathies with VEGF Inhibitor Conbercept.

: To provide a detailed review on the therapeutic efficacy of conbercept for the management of ocular vasculopathies. : A comprehensive literature search of various electronic databases was performed. : Ocular vasculopathy is one of the major causes of visual impairment and blindness which includes a range of disorders.

Observation of topical tacrolimus on high-risk penetrating keratoplasty patients: a randomized clinical trial study.

Background/objectives: To evaluate the clinical efficacy of topical tacrolimus 0.1% and cyclosporine 1% on high-risk penetrating keratoplasty (PKP) patients.

Subjects/methods: A series of 49 high-risk PKP patients (49 eyes), 20 males, 29 females from the age of 4 months to 74 years of age with the mean of 32.

[Effects of tillage mode and nitrogen application rate on nitrogen use efficiency of wheat in a farming-pasture zone of North China].

A field experiment was conducted in a farming-pasture zone in Chifeng City of Inner Mongolia Autonomous Region, North China to investigate the effects of different tillage modes and nitrogen (N) application rates on the grain yield and nitrogen use efficiency (NUE) of winter wheat. The results showed that long term conservation tillage increased the wheat NUE by 3% -4%, and decreased the environmental pollution by fertilizer N. Conservation tillage promoted the N absorption by wheat, and increased the grain yield.