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"Lin, Shudong"
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Research Progress with Membrane Shielding Materials for Electromagnetic/Radiation Contamination
2023
As technology develops at a rapid pace, electromagnetic and radiation pollution have become significant issues. These forms of pollution can cause many important environmental issues. If they are not properly managed and addressed, they will be everywhere in the global biosphere, and they will have devastating impacts on human health. In addition to minimizing sources of electromagnetic radiation, the development of lightweight composite shielding materials to address interference from radiation has become an important area of research. A suitable shielding material can effectively reduce the harm caused by electromagnetic interference/radiation. However, membrane shielding materials with general functions cannot effectively exert their shielding performance in all fields, and membrane shielding materials used in different fields must have specific functions under their use conditions. The aim of this review was to provide a comprehensive review of these issues. Firstly, the causes of electromagnetic/radiation pollution were briefly introduced and comprehensively identified and analyzed. Secondly, the strategic solutions offered by membrane shielding materials to address electromagnetic/radiation problems were discussed. Then, the design concept, technical innovation, and related mechanisms of the existing membrane shielding materials were expounded, the treatment methods adopted by scholars to study the environment and performance change laws were introduced, and the main difficulties encountered in this area of research were summarized. Finally, on the basis of a comprehensive analysis of the protection provided by membrane shielding materials against electromagnetic/radiation pollution, the action mechanism of membrane shielding materials was expounded in detail, and the research progress, structural design and performance characterization techniques for these materials were summarized. In addition, the future challenges were prospected. This review will help universities, research institutes, as well as scientific and technological enterprises engaged in related fields to fully understand the design concept and research progress of electromagnetic/radiation-contaminated membrane shielding materials. In addition, it is hoped that this review will facilitate efforts to accelerate the research and development of membrane shielding materials and offer potential applications in areas such as electronics, nuclear medicine, agriculture, and other areas of industry.
Journal Article
Facile Construction of Chestnut‐Like Structural Fireproof PDMS/Mxene@BN for Advanced Thermal Management and Electromagnetic Shielding Applications
2024
Composite polymer materials featured superior thermal conductivity, flame retardancy, and electromagnetic shielding performance are increasingly in demand due to the rapid development of highly miniaturized, portable, and flexible electronic devices. Herein, a facile and green ball milling shear method is utilized for generating MXene@Boron nitride (MXene@BN). The multi‐functional fillers (MXene@BN) are constructed and incorporated into polydimethylsiloxane (PDMS) to prepare a multifunctional composite (PDMS/MXene@BN) for achieving improved electromagnetic interference (EMI) shielding performance and thermal conductivity as well as flame retardancy simultaneously. When the PDMS/MXene@BN composite has a MXene@BN loading of 2.4 wt.%, it exhibits a high thermal conductivity of 0.59 W m−1K−1, which is 210% higher than that of the pure PDMS matrix. This is attributed to its unique chestnut‐like double‐layer structure. With a smoke production rate (SPR) of 0.04 m2 s−1 and total smoke production (TSP) of 3.51 m2, PDMS/MXene@BN 2.4 composite exhibits superb smoke suppression properties. These SPR and TSP values are 63.20% and 63.50% lower than the corresponding values of pure PDMS. Moreover, the EMI SE of the PDMS/MXene@BN 2.4 can reach 26.3 dB at 8.5 GHz. The work reported herein provides valuable insight into developing composites with multiple functions, which show strong potential for application in advanced packaging materials. A facile and green ball milling shear method is utilized for generating MXene@BN. The multi‐functional fillers (MXene@BN) are constructed and incorporated into polydimethylsiloxane (PDMS) to prepare a multifunctional‐composites (PDMS/MXene@BN) for achieving improved electromagnetic interference (EMI) shielding performance and enhanced thermal conductivity as well as flame retardancy simultaneously. This work provides a biomimetic method for manufacturing high‐performance composite materials with excellent flame retardancy and thermal conductivity as well as EMI shielding and has great prospects for applications in electronic devices.
Journal Article
A new regional cotton growth model based on reference crop evapotranspiration for predicting growth processes
2023
Meteorological conditions and irrigation amounts are key factors that affect crop growth processes. Typically, crop growth and development are modeled as a function of time or growing degree days (
GDD
). Although the most important component of
GDD
is temperature, it can vary significantly year to year while also gradually shifting due to climate changes. However, cotton is highly sensitive to various meteorological factors, and reference crop evapotranspiration (
ET
O
) integrates the primary meteorological factors responsible for global dryland extension and aridity changes. This paper constructs a cotton growth model using
ET
O
, which improves the accuracy of crop growth simulation. Two cotton growth models based on the logistic model established using
GDD
or
ET
O
as independent factors are evaluated in this paper. Additionally, this paper examines mathematical models that relate irrigation amount and irrigation water utilization efficiency (
IWUE
) to the maximum leaf area index (
LAI
max
) and cotton yield, revealing some key findings. First, the model using cumulative reference crop evapotranspiration (
CET
O
) as the independent variable is more accurate than the one using cumulative growing degree days. To better reflect the effects of meteorological conditions on cotton growth, this paper recommends using
CET
O
as the independent variable to establish cotton growth models. Secondly, the maximum cotton yield is 7171.7 kg/ha when
LAI
max
is 6.043 cm
2
/cm
2
, the corresponding required irrigation amount is 518.793 mm, and
IWUE
is 21.153 kg/(ha·mm). Future studies should consider multiple associated meteorological factors and use
ET
O
crop growth models to simulate and predict crop growth and yield.
Journal Article
Response of cotton growth, yield, and water and nitrogen use efficiency to nitrogen application rate and ionized brackish water irrigation under film-mulched drip fertigation
by
Wei, Kai
,
Lin, Shudong
,
Deng, Mingjiang
in
Abiotic stress
,
Agricultural production
,
Brackish water
2024
The presence of brackish water resources is significant in addressing the scarcity of freshwater resources, particularly in the Xinjiang region. Studies focused on reducing adverse effect of brackish water irrigation based on using ionized brackish water, as well as on investigating its effects on fibre and oil plant production processes, remain incipient in the literature. Some benefits of this technique are the optimization of the quality and quantity of irrigation water, economy of water absorbed by the plants, improvement in the vegetative growth and productivity compared to irrigation using conventional brackish water. Thus, the aim of the current study is to assess the effect of different nitrogen application rates on soil water and salinity, cotton growth and water and nitrogen use efficiency.
The experimental design consisted of completely randomized design with two water types (ionized and non-ionized) and six nitrogen application rates with four replications.
Irrigation conducted with ionized brackish water and different nitrogen application rates had significant effect on the plant height, leaf area index, shoot dry matter, boll number per plant and chlorophyll content. The study also demonstrated significant effects of ionized brackish water on soil water content and soil salinity accumulation. The highest cotton production was achieved with the use of 350 kg·ha
of ionized brackish water for irrigation, resulting in an average increase of 11.5% compared to the use of non-ionized brackish water. The nitrogen application exhibits a quadratic relationship with nitrogen agronomic use efficiency and apparent nitrogen use efficiency, while it shows a liner relationship with nitrogen physiological use efficiency and nitrogen partial productivity. After taking into account soil salinity, cotton yield, water and nitrogen use efficiency, the optimal nitrogen application rate for ionized brackish water was determined to be 300 kg·ha
.
It is hoped that this study can contribute to improving water management, reducing the environmental impact without implying great costs for the producer.
Journal Article
Application of Magnetized Ionized Water and Bacillus subtilis Improved Saline Soil Quality and Cotton Productivity
2024
Soil salinization, a significant global challenge, threatens sustainable development. This study explores the potential of magnetized ionized water irrigation and Bacillus subtilis application to mitigate this issue. The former method is hypothesized to enhance soil salt leaching, while the latter is expected to improve soil nutrient availability, thereby increasing microbial diversity. To address the unclear impact of these interventions on soil quality and cotton productivity, this study employs four different experimental methods: magnetized ionized water irrigation (M), application of 45 kg ha−1 B. subtilis (B), a combination of 45 kg ha−1 B. subtilis with magnetized ionized water irrigation (MB), and a control treatment with no intervention (CK). This study aims to clarify the effects of these treatments on soil bulk density (BD), field capacity (FC), salinity and alkalinity, nutrient content, microbial activity, and cotton crop yield and quality. Additionally, it aims to evaluate the efficacy of these methods in improving saline soil conditions by developing a soil quality index. The results showed that using magnetized ionized water for irrigation and applying B. subtilis, either alone or together, can effectively lower soil pH and salt levels, enhance microbial diversity and abundance, and improve the yield and quality of cotton. Notably, B. subtilis application significantly decreased BD and enhanced FC and nutrient content (p < 0.05). A correlation was found where soil nutrient content decreased as pH and salt content increased. Furthermore, a strong correlation was observed between the major soil bacteria and fungi with BD, FC, and salt content. Comparatively, M, B, and MB significantly boosted (p < 0.01) the soil quality index by 0.21, 0.52, and 0.69 units, respectively, and increased (p < 0.05) cotton yield by 5.7%, 14.8%, and 20.1% compared to CK. Therefore, this research offers eco-friendly and efficient methods to enhance cotton production capacity in saline soil.
Journal Article
Curcumin Promotes the Recovery of Motor Function After Brachial Plexus Avulsion Injury in Rats
2025
Background and Purpose Brachial plexus root avulsion (BPRA) often results in the loss of upper limb motor function. Curcumin (CUR) has been proven to have neuroprotective properties in various neurological disorders due to the effects of anti‐oxidative stress and anti‐inflammation. Therefore, in this study, we focused on the effect of CUR on the recovery of motor functions in rats after BPRA. Methods Adult male Sprague‐Dawley rats were used to build the BPRA and reimplantation model and randomly divided into two groups: the NS group (treated with saline) and the CUR group (treated with 40 mg/ml CUR), with 10 rats in each group. After conducting the Terzis grooming test (TGT) to assess the recovery of motor function, the anterior horn of the spinal cord was collected for detecting the inflammatory responses using Western blot, the musculocutaneous nerves were collected for detecting the motor neuron survival and myelination using Luxol fast blue (LFB) staining or real‐time quantitative PCR (qRT‐PCR), and the biceps brachii were collected for detecting muscle atrophy using hematoxylin and eosin (H&E) staining. Results CUR can significantly enhance the motor recovery in rats following BPRA, reduce inflammation in the anterior horn of the spinal cord, improve the motor neuronal survival and axonal remyelination in musculocutaneous nerves, alleviate muscle atrophy. Conclusion CUR promotes the recovery of motor function in rats after BPRA by inhibiting inflammation, reducing motor neuron death, promoting axonal remyelination, and reducing muscle atrophy, thus laying a foundation for the treatment of BPRA with CUR. CUR promotes the recovery of motor function in rats after BPRA by inhibiting inflammation, promoting axonal remyelination, and reducing muscle atrophy, laying a foundation for the treatment of BPRA with CUR.
Journal Article
Effects of Organic Fertilizer on Photosynthesis, Yield, and Quality of Pakchoi under Different Irrigation Conditions
by
Wei, Kai
,
Lin, Shudong
,
Tao, Wanghai
in
Agricultural practices
,
Agricultural production
,
Agriculture
2024
Water scarcity and the overuse of chemical fertilizers present significant challenges to modern agriculture, critically affecting crop photosynthesis, yield, quality, and productivity sustainability. This research assesses the impact of organic fertilizer on the photosynthetic attributes, yield, and quality of pakchoi under varying irrigation water conditions, including fresh water and brackish water. Findings reveal that the modified rectangular hyperbolic model most accurately captures the photosynthetic reaction to organic fertilization, outperforming other evaluated models. The maximum net photosynthesis rate (Pnmax), yield, soluble sugar (SS), and soluble protein content (SP) all exhibited a downward-opening quadratic parabolic trend with increasing amounts of organic fertilizer application. Specifically, under fresh-water irrigation, the optimal Pnmax, yield, SS, and SP were obtained at organic fertilizer rates of 65.77, 74.63, 45.33, and 40.79 kg/ha, respectively, achieving peak values of 20.71 µmol/(m2·s), 50,832 kg/ha, 35.63 g/kg, and 6.25 g/kg. This investigation provides a foundational basis for further research into the intricate relationship between water salinity stress and nutrient management, with the goal of crafting more sophisticated and sustainable farming methodologies. The insights gained could significantly influence organic fertilizer practices, promoting not only higher yields but also superior quality in agricultural outputs.
Journal Article
Quantifying the Impact of Organic Fertilizers on Soil Quality under Varied Irrigation Water Sources
2023
The issues of limited water availability and excessive fertilizer utilization, both of which negatively impact soil health and crop productivity, are key focal points in the pursuit of sustainable agricultural progress. Given these crucial obstacles, it is crucial to utilize accurate methods of irrigation and fertilization in order to improve the condition of the soil and promote the progress of sustainable farming. The objective of this research is to determine the optimal indicators for creating a minimal data set (MDS) that can assess the influence of organic fertilizers on the quality of pakchoi soil in varying irrigation water sources. Principal component analysis and norm values were utilized to create the MDS, and its accuracy was confirmed by examining coefficients of Nash efficiency and relative deviation. The results of our study showed that there was not much difference in soil bulk density (BD), but there was moderate variation in soil water content (SWC), soil salt content (SSC), alkali-hydrolyzed nitrogen (AN), available phosphorus (AP), available potassium (AK), and organic matter (OM). The selected MDS indicators included BD, AN, and OM. The soil quality index (SQI) achieved a high R2 value of 0.952, indicating a strong correlation. Furthermore, the nonlinear evaluation model showed a high level of effectiveness and efficiency, with Ef and Er values of 0.899 and 0.046, respectively. The effectiveness of this model in evaluating soil quality under different irrigation water conditions is evident. Notably, treatments involving magnetized–ionized brackish water (average SQI = 0.524) and the application of 20 kg/ha organic fertilizer (average SQI = 0.719) demonstrate the capacity to enhance soil quality. The present study presents a pragmatic, productive, and economical quantitative evaluation approach that can be used for worldwide vegetable farming with the utilization of clean water, saline water, magnetized–ionized saline water, and organic manure. Thus, we encourage vegetable growers to consider adopting both magnetized–ionized brackish water and organic fertilizers, and the utilization of the nonlinear soil quality index evaluation model is recommended as it offers a sensitive and effective approach to assessing soil quality across various irrigation and organic fertilizer schemes.
Journal Article
Study on the Therapeutic Effects of Bisdemethoxycurcumin on a Cerebral Amyloid Angiopathy Mouse Model Established via Chronic Treatment With Five Vascular Risk Factors
by
Deng, Limin
,
Lin, Shudong
,
Xie, Juan
in
Amyloid beta-Peptides - metabolism
,
Animal cognition
,
Animals
2025
Background and Purpose Cerebral amyloid angiopathy (CAA) is recognized as a major contributor to progressive cognitive decline and cerebral hemorrhages in the elderly population. Currently, there is a global shortage of safe and effective treatments for this condition. Bisdemethoxycurcumin (BDMC) has been demonstrated to exhibit pharmacological effects with anti‐Aβ toxicity properties. Thus, the present study mainly focused on the potential therapeutic effects of BDMC on CAA. Method The 30 male C57BL/6 mice were subjected to chronic treatment with five vascular risk factors (lipopolysaccharide, social stress, streptozotocin, high‐cholesterol diet, and copper‐containing drinking water) for 35 weeks to establish a CAA mouse model. Of these, 15 CAA mice received oral administration of BDMC (50 mg/kg) for two consecutive weeks as an intervention, while the remaining 15 CAA mice received an equal volume of physiological saline by gavage. The study observed the levels of Aβ40 and proinflammatory factors in brain tissue and plasma, Aβ deposition in cerebral blood vessels, microbleeds in brain tissue, expression of proteins related to the cGAS/STING signaling pathway in brain tissue, as well as the contents of p‐RIPK‐1, p‐RIPK‐3, p‐MLKL, neuronal morphology, and learning and memory abilities in mice. Result The therapeutic administration of BDMC demonstrates a pronounced efficacy in alleviating Aβ burden and cerebral microbleeding in CAA mice, concurrently enhancing learning and memory capabilities. Interestingly, BDMC may inhibits neuroinflammatory responses by reducing the expression of cGAS/STING signaling pathway proteins and suppresses necroptosis. Conclusion Our research findings demonstrate that BDMC exerts therapeutic effects in a mouse model of CAA established through chronic treatment involving five vascular risk factors. BDMC exerts therapeutic effects in a mouse model of CAA established through chronic treatment involving five vascular risk factors; it inhibits neuroinflammatory responses by suppressing the expression of cGAS/STING signaling pathway proteins and reduces ameliorate vascular amyloid deposition.
Journal Article
Effects of Combined Application of Organic Fertilizer on the Growth and Yield of Pakchoi under Different Irrigation Water Types
2023
The long-term utilization of inorganic fertilizers in pakchoi cultivation can result in increased nitrate levels, potentially posing health risks to human consumers. For this study, we investigated the efficacy of organic fertilizers as a promising alternative for enhancing soil structure, improving fertility, and increasing the yield of pakchoi. A two-year field trial was conducted from 2022 to 2023 to examine the effects of the combined application of organic fertilizer on the growth and yield of pakchoi. Three types of irrigation water, namely fresh water (F), brackish water (B), and magnetized–ionized brackish water (MIB), were used in combination with five different organic fertilizer rates (0, 20, 40, 60, and 80 kg/ha, denoted as 0, 1, 2, 3, and 4). The results revealed that treatments F2, F3, B2, B3, and MIB3 significantly improved the growth indexes of pakchoi. Notably, treatments F3, B3, and MIB3 resulted in an earlier onset of the fast growth period for leaf area index and fresh weight. During this period, we observed the highest cumulative growing degree days (ΔCGDD) values, which were 628.36 °C for plant height (MIB4), 475.01 °C for leaf area index (B3), 259.73 °C for fresh weight (B3), and 416.82 °C for dry matter accumulation (B3). The logistic model indicated an increase in eigenvalue at an organic fertilizer application rate of 60 kg/ha, while excessive fertilization had inhibitory effects. Under brackish water irrigation, both plant height and leaf area index demonstrated significant positive effects on yield, with plant height having a particularly noteworthy direct effect at a coefficient of 0.935. MIB water irrigation demonstrated superior advantages for promoting pakchoi growth, leading to significantly higher rates of fresh weight and dry matter accumulation compared to traditional brackish water irrigation. The maximum value of each growth index exerted a significant direct influence on its respective growth parameter, whereas ΔCGDD demonstrated a relatively smaller or potentially negative effect. Applying organic fertilizer appropriately can assist in the production of pakchoi and provide a scientific basis for increasing yield.
Journal Article