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Inner Mongolia, a major region in China for growing sugar beet, faces challenges caused by unscientific water and fertilizer management. This mismanagement restricts the improvement of sugar beet yield and quality and exacerbates water waste and environmental pollution. This study aims to evaluate the effects of reduced water and fertilizer on the growth and physiological metabolism of sugar beet taproot. Field experiments were conducted in Ulanqab, Inner Mongolia, in 2022 and 2023, using a split-plot design with three levels each of fertilization and irrigation. The study analyzed the effects of reduced water and fertilizer treatments on fresh taproot weight, respiration rate, energy metabolism, respiratory enzyme activity, and gene expression in sugar beet taproot. It was found that a 10% reduction in fertilizer significantly increased the beet taproot fresh weight. Further research revealed that during the rapid leaf growth phase and the taproot and sugar growth period, a 10% reduction in fertilizer upregulated HK and IDH gene expression and downregulated G6PDH gene expression in the beet taproot. This increased HK and IDH activities, decreased G6PDH activity, enhanced the activity of the EMP-TCA pathway, and inhibited the PPP. Taproot weight was positively correlated with the respiration rate, ATP content, EC, and ATPase, HK, and IDH activities, thereby increasing the taproot growth rate and taproot fresh weight, with an average increase of 4.0% over two years. These findings introduce a novel method for optimizing fertilizer use, particularly beneficial in water-scarce regions. Implementing this strategy could help farmers in western Inner Mongolia and similar areas improve crop yield and sustainability. This study offers new insights into resource-efficient agricultural practices, highlighting the importance of customized fertilization strategies tailored to local environmental conditions. [ABSTRACT FROM AUTHOR]

This paper first introduces the background and basic concept of digital twin city, then analyzes the relationship between digital twin city and smart city. Next, it introduces the primary supporting technologies for the construction of a digital twin city, and finally summarizes the current application status and development trends regarding digital twin city. The authors argue that digital twin technology will face challenges in regards to data, basic knowledge base, system integration, and talent issues if it is to be more widely applied in the construction of the smart city. Additionally, the authors propose institutional and technical suggestions for solving these problems at the macro and micro levels.

In this article, I try to document the lived experiences of nurses who were sent to Wuhan to work in the COVID‐19 wards and consider the impact of such experiences on their psychological well‐being. I show the contextual factors in Wuhan, the inherent nature of nursing during the pandemic and the transition from the immediate reactions of nurses to long‐term impacts on their personalities, formed through the whole process of abjection. Therefore, I argue that we need to consider how nursing experiences, before, during and after their professional work in the wards, would instigate abjection within nurses. The abjection of nurses does not start only from the ward, nor does it not end in the ward. Rather, the abjection of nurses, as a reaction to lived experiences, is nuanced and the study of it can reveal rich details of nurses' life both inside and outside of the ward. [ABSTRACT FROM AUTHOR]

Sugar beet is an important sugar crop, and its roots are mainly used for processing raw materials to produce products such as sugar, molasses, and saccharin, as well as being used as fodder for livestock. BvCPD, a key enzyme gene for brassinosteroid (BR) synthesis, regulates the development of parenchyma cells and vascular bundles by promoting BR synthesis, which promotes the expansion of the sugar beet taproot and influences the growth, development, and yield of sugar beets. This study investigated the impact of BvCPD on the physiological metabolism of sugar beet utilizing BvCPD overexpression, silent, and wild-type (WT) lines. BvCPD increased the chlorophyll content and maximum photochemical efficiency and improved the photosynthetic characteristics of sugar beet leaves. Simultaneously, BvCPD increased the rate of sugar beet taproot respiration and ATP content by enhancing the activities of phosphoglycerate kinase, alcohol dehydrogenase, sucrose synthase, and sucrose synthase catabolism. Moreover, BvCPD induced changes in the sugar fraction content, which increased the sugar yield of a single plant. In addition, BvCPD promoted water absorption, nitrogen accumulation, and lignin/cellulose synthesis activities, facilitated by increased activities of phenylalanine ammonia-lyase, cinnamyl alcohol dehydrogenase, cellulose synthase, and protein serine/threonine phosphatases, providing the requisite energy and materials for sugar beet growth. These findings not only provide a new perspective for understanding the physiological mechanisms regulating the growth of sugar beets but also provide a theoretical basis for the future improvement of sugar beet varieties through molecular breeding techniques. [ABSTRACT FROM AUTHOR]

This study focused on developing a composite coating comprising water-soluble chitosan (CTS) and curdlan (CUR). Cherry tomatoes served as the test material for assessing the preservative efficacy of these coatings. The incorporation of CUR markedly enhanced the coating's surface properties, refined its molecular structure, and improved its tensile strength and elongation at break. Additionally, the coating demonstrated enhanced permeability to water vapor, oxygen, and carbon dioxide and improved light transmission. The storage experiment, conducted at 25 ± 1 °C with a relative humidity of approximately 92% over 10 days, revealed that the CTS/CUR composite coating at a 1:1 ratio significantly outperformed the individual CTS or CUR coating and uncoated samples in maintaining the quality of postharvest cherry tomatoes. The 1:1 CTS/CUR composite coating demonstrated superior preservative effects. This study suggested that water-soluble chitosan/curdlan composite coatings have considerable potential for use in the preservation of postharvest fruits and vegetables. [ABSTRACT FROM AUTHOR]

BackgroundVariable temperature condition is the most extensive requirement in many scattering experiments. Automatic sample shifting technology based on the variable temperature condition can significantly improve the detection efficiency of samples.PurposeThis study aims to develop a varied temperature automatic sample shifting device for synchrotron radiation small angle X-ray scattering (SAXS) experiment.MethodsThe device was designed to accommodate up to 100 samples, covering a wide temperature range of 25~280 °C with temperature control accuracy of ±1 °C. Two-dimensional mobile platform was used to control sample switching, and the temperature controller and heating element were used to control the sample temperature of experiment. In addition, the temperature-stroke coupling control software suitable for this device was implemented to realize the remote control of sample switching and temperature changing. The structure and the temperature distribution of the sample rack were analyzed by numerical simulation and compared with that of experiment to finalize the appropriate structure for this device.Results & ConclusionsThe maximum error between the simulated temperature and the measured temperature is less than 2% and the structure design is reasonable, satisfying multi-sample variable temperature test requirements for SAXS experiment.

Sugar beet is a characteristic cash crop in Inner Mongolia, and water and fertilizer is an important management measure in sugar beet planting. The interaction between water and nitrogen is of practical significance in regulating the growth of sugar beet. The coordinated relationship between water and fertilizer can achieve the purpose of water saving, fertilizer saving, cost saving and efficiency increasing. The cultivation method of drip irrigation under plastic mulch was adopted in this study. The effects of water nitrogen supply on water metabolism and photosynthetic performance of sugar beet were studied through two years of field experiments in order to provide theoretical basis for improving the utilization efficiency of water and fertilizer and rational fertilization and irrigation. The results showed that the water nitrogen supply level and its proportion had influence with the water potential, Transpiration rate (Tr), Photosynthetic rate (Pn) and stomatal Conductance (Cond) of sugar beet leaves. And they were significantly positively correlated with the yield of sugar beet. When the water potential of sugar beet leaves was −0.38 ∼ −0.23 MPa in the period of leaf fast growth, root and sugar growth, and −0.45 ∼ −0.38 MPa in the period of sugar accumulation, the yield and sugar content were the highest. Under the coupling condition of water and nitrogen, the irrigation amount of sugar beet was 1350 ∼ 1427 m3·ha−1, and the nitrogen application amount was 150 ∼ 179.22 kg·ha−1. Sugar beet has the highest utilization rate of light energy and yield and sugar content. [ABSTRACT FROM AUTHOR]