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Dimethylamine oxalate manipulating CsPbI_(3) perovskite film crystallization process for high efficiency carbon electrode based perovskite solar cells

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Journal of Energy Chemistry 2024年第6期93卷 221-228,I0006页

作者： Wenran Wang Xin Peng Jianxin Zhang Jiage Lin Rong Huang Guizhi Zhang Huishi Guo Zhenxiao Pan Xinhua Zhong Huashang Rao Key Laboratory for Biobased Materials and Energy of Ministry of Education College of Materials and EnergySouth China Agricultural UniversityGuangzhou 510642GuangdongChina College of Chemistry and Civil Engineering Shaoguan UniversityShaoguan 512005GuangdongChina guangdong Provincial Key Laboratory of Utilization and Conservation of Food and Medicinal Resources in Northern Region Shaoguan UniversityShaoguan 512005GuangdongChina

Crystallization process determines the quality of perovskite films and the performances of resultant perovskite solar cells(PSCs).Dimethylamine oxalate has been proven as a multifunctional modulator,and is explored as an efficient additive in manipulating the crystallization process of CsPbI_(3) perovskite *** one hand,oxalate serves as the precipitator that facilitates the nucleation process of *** larger size of intermediate is conductive to the larger size and smaller grain boundaries of resultant *** the other hand,in subsequent annealing process,the phase conversion and growth process of transient perovskite can be decelerated due to the strong interactions of oxalate with both dimethylamine cation(DMA^(+))and Pb^(2+).Due to the optimized crystallization kinetics,the morphology and quality of CsPbI_(3) perovskite films are comprehensively improved with lower defect concentrations,and charge recombination loss is effectively *** from the optimized crystal quality of perovskite films,the carbon electrode-based CsPbI_(3) PSCs exhibit a champion efficiency of 18.48%.This represents one of the highest levels among all hole transport layer-free inorganic perovskite solar cells.

关键词： Solar cells Perovskite CsPbI_(3) Carbon electrodes Oxalate

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Flowering-time regulation by the circadian clock:From Arabidopsis to crops

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The Crop Journal 2024年第1期12卷 17-27页

作者： Mingkang Yang Wenjie Lin Yarou Xu Biyu Xie Baiyin Yu Liang Chen Wei Huang State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources College of Life SciencesSouth China Agricultural UniversityGuangzhou 510642GuangdongChina Henry Fok School of Biology&Agriculture Shaoguan UniversityShaoguan 512005GuangdongChina guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms South China Agricultural UniversityGuangzhou 510642GuangdongChina guangdong Laboratory for Lingnan Modern Agriculture Guangzhou 510642GuangdongChina guangdong Provincial Key Laboratory of Utilization and Conservation of Food and Medicinal Resources in Northern Region Shaoguan UniversityShaoguan 512005GuangdongChina

Precise timing of flowering in plants is critical for their growth and reproductive *** factor controlling flowering time is the cycle of light and darkness within a day,known as the *** are classified into long-day,short-day,and day-neutral plants based on light requirements for floral *** the molecular mechanisms that govern this differentiation remain incompletely understood,studies have consistently shown that the circadian clock plays a central role in regulating photoperiod response across diverse plant ***,there is a scarcity of reviews describing the regulatory network linking the circadian clock with photoperiodic *** review summarizes that regulatory network,focusing on the distinct roles of clock genes in long-day and short-day *** also discuss the strategies of clock gene mutations contributing to geographic variation in longday and short-day crops.

关键词： Circadian clock Photoperiod Short-day plants Long-day plants

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An enhanced semi-supervised learning method with self-supervised and adaptive threshold for fault detection and classification in urban power grids

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Energy and AI 2024年第3期17卷 65-79页

作者： Jiahao Zhang Lan Cheng Zhile Yang Qinge Xiao Sohail Khan Rui Liang Xinyu Wu Yuanjun Guo Taiyuan University of Technology TaiyuanShanxiChina Shenzhen Institute of Advanced Technology Chinese Academy of SciencesShenzhenGuangdongChina guangdong Institute of Carbon Neutrality(shaoguan) ShaoguanGuangdongChina Sino-Pak Center for Artificial Intelligence Pak-Austria Fachhochschule–Institute of Applied Sciences and TechnologyHaripurKhyber PakhtunkhwaPakistan Chengxi company State Grid Tianjin Electric Power CompanyTianjinChina

With the rapid development of urban power grids and the large-scale integration of renewable energy, traditional power grid fault diagnosis techniques struggle to address the complexities of diagnosing faults in intricate power grid systems. Although artificial intelligence technologies offer new solutions for power grid fault diagnosis, the difficulty in acquiring labeled grid data limits the development of AI technologies in this area. In response to these challenges, this study proposes a semi-supervised learning framework with self-supervised and adaptive threshold (SAT-SSL) for fault detection and classification in power grids. Compared to other methods, our method reduces the dependence on labeling data while maintaining high recognition accuracy. First, we utilize frequency domain analysis on power grid data to filter abnormal events, then classify and label these events based on visual features, to creating a power grid dataset. Subsequently, we employ the Yule–Walker algorithm extract features from the power grid data. Then we construct a semi-supervised learning framework, incorporating self-supervised loss and dynamic threshold to enhance information extraction capabilities and adaptability across different scenarios of the model. Finally, the power grid dataset along with two benchmark datasets are used to validate the model’s functionality. The results indicate that our model achieves a low error rate across various scenarios and different amounts of labels. In power grid dataset, When retaining just 5% of the labels, the error rate is only 6.15%, which proves that this method can achieve accurate grid fault detection and classification with a limited amount of labeled data.

关键词： Power grid fault detection Semi-supervised learning Data driven Deep learning Smart grid

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Influence of Heat-setting Temperature on the Microporous Structure and Properties of PP/HDPE Bilayer Microporous Membranes

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Chinese Journal of Polymer Science 2024年第8期42卷 1243-1252页

作者： Jie Xie Yong-Shi Wu Jia-Yi Xie Rui-Jie Xu Cai-Hong Lei Sai-Nan Song Guang-Quan Li An-Ping Huang School of Materials and Energy Guangdong University of TechnologyGuangzhou 510006China Lanzhou Petrochemical Research Center Petrochemical Research InsititutePetroChinaLanzhou 730060China School of Chemistry and Civil Engineering Shaoguan CollegeShaoguan 512005China

Due to the mechanical stability of PP layer,the PP/HDPE double-layer microporous mem brane could be prepared at a higher heat-setting temperatu re than that of PE monolayer *** this work,the effects of heat-setting temperature on the pore structure and properties of PP/HDPE dou ble-layer membrane were *** the increase of heat-setting temperature from 120℃to 130℃,the length of connecting bridge crystal and crystallinity in the PE layer increase due to the melting of thin lamellae and the stability of connecting bridge structure during *** corresponding air permeability,po rosity,wetta bility of liquid electrolyte and mechanical property of the heat-set microporous membrane increase,exhibiting better electrochemical ***,when the heat-setting temperature is further increased to 140℃,higher than the melting point of PE resin,some pores are closed since the lamellae and connecting bridges melt and shrink during heat-setting,resulting in a decrease of air permeability and *** contrast,there is negligible change in the PP layer within the above heat-setting temperature *** study successfully builds the relationship between the stable pore structure and property of microporous membrane during heat-setting,which is helpful to guide the production of high-pe rformance PP/PE/PP lithium batteries separator.

关键词： PP/HDPE bilayer microporous membranes Heat-setting temperature SAXS

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A 1-bp deletion in the MC04g1399 is highly associated with failure to produce fruit wart in bitter gourd

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Horticultural Plant Journal 2024年第1期10卷 171-180页

作者： Jia Liu Junjie Cui Jichi Dong Jian Zhong Chunfeng Zhong Fanchong Yuan Wendong Guan Fang Hu Jiaowen Cheng Kailin Hu College of Horticulture South China Agricultural UniversityGuangzhouGuangdong 510642China Key Laboratory of Biology and Genetic Improvement of Horticultural Crops(South China) Ministry of Agriculture and Rural AffairsGuangzhouGuangdong 510642China guangdong Vegetables Engineering Research Center GuangzhouGuangdong 510642China Department of Horticulture Foshan UniversityFoshanGuangdong 528225China Henry Fok School of Biology and Agricultural Shaoguan UniversityShaoguanGuangdong 512023China

Fruit wart is an important appearance trait influencing consumer preferences of bitter gourd(Momordica charantia L.).The molecular genetic mechanisms underlying fruit wart formation in bitter gourd are largely *** this study,genetic analysis based on four generations showed that fruit wart formation in bitter gourd was controlled by a single dominant locus named as *** Fwa locus was initially mapped into a 4.82 Mb region on pseudochromosome 4 by BSA-seq analysis and subsequently narrowed down to a 286.30 kb region by linkage analysis.A large F2population consisting of 2360 individuals was used to screen recombinants,and the Fwa locus was finally fine mapped into a 22.70 kb region harboring four protein-coding genes through recombination ***04g1399,encoding an epidermal patterning factor 2-like protein,was proposed as the best candidate gene for Fwa via sequence variation and expression *** addition,a 1-bp insertion and deletion(InDel)variation within MC04g1399 was converted to a cleaved amplified polymorphic sequence(CAPS)marker that could precisely distinguish between the warty and non-warty types with an accuracy rate of 100%among a wide panel of 126 bitter gourd germplasm *** results not only provide a scientific basis for deciphering the molecular mechanisms underlying fruit wart formation but also provide a powerful tool for efficient genetic improvement of fruit wart via marker-assisted selection.

关键词： Bitter gourd Fruit wart Bulk segregant analysis Fine-mapping Candidate gene

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Antibody-modified integrated microfluidic terahertz biosensor for detection of breast cancer biomarkers

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Optoelectronics Letters 2024年第4期20卷 249-256页

作者： LIU Jianjun School of Intelligent Engineering Shaoguan UniversityShaoguan 512005China

Breast cancer is the most common malignant tumor in women,which seriously threatens the physical and mental health of women *** existing detection methods have problems,such as large sample consumption,time-consuming sample preparation,expensive equipment,and low *** order to solve these problems,this paper proposes a method for quickly detecting breast cancer using surface-functionalized terahertz metamaterial *** use of PIK3CA-modified sensors enhances the detection sensitivity and specificity of *** on the red shift of the sensor absorption peak caused by exosomes,breast cancer patients can be distinguished from healthy *** study demonstrates that exosome detection is effective for the repeatable and non-invasive diagnosis of breast cancer *** terahertz metamaterial biosensor designed in this paper has high specificity,repeatability,and sensitivity,and has great potential for application in the development of modern diagnostic instruments.

关键词： specificity diagnosis modified

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Low-temperature NH_(3) abatement via selective oxidation over a supported copper catalyst with high Cu^(+) abundance

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Journal of Environmental Sciences 2024年第9期143卷 12-22页

作者： Zhiming Yang Lin Peng Leneng Yang Mingli Fu Daiqi Ye Peirong Chen guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control National Engineering Laboratory for VOCs Pollution Control Technology and EquipmentSchool of Environment and EnergySouth China University of TechnologyGuangzhou 510006China guangdong Chengyi Environmental Technology Corp. Shaoguan 512158China

Selective catalytic NH_(3)-to-N_(2) oxidation(NH_(3)-SCO)is highly promising for abating NH_(3) emissions slipped from stationary flue gas after-treatment *** practical application,however,is limited by the non-availability of low-cost catalysts with high activity and N_(2) ***,using defect-rich nitrogen-doped carbon nanotubes(NCNT-AW)as the support,we developed a highly active and durable copper-based NH_(3)-SCO catalyst with a high abundance of cuprous(Cu^(+))*** obtained Cu/NCNT-AW catalyst demonstrated outstanding activity with a T_(50)(*** temperature to reach 50% NH_(3) conversion)of 174℃ in the NH_(3)-SCO reaction,which outperformed not only the Cu catalyst supported on N-free O-functionalized CNTs(OCNTs)or NCNT with less surface defects,but also those most active Cu catalysts in open *** kinetics measurements and temperature-programmed surface reactions using NH_(3)as a probe molecule revealed that the NH_(3)-SCO reaction on Cu/NCNT-AW follows an internal selective catalytic reaction(i-SCR)route involving nitric oxide(NO)as a key *** to mechanistic investigations by X-ray photoelectron spectroscopy,Raman spectroscopy,and X-ray absorption spectroscopy,the superior NH_(3)-SCO performance of Cu/NCNT-AW originated from a synergy of surface defects and ***,surface defects promoted the anchoring of Cu O nanoparticles on N-containing sites and,thereby,enabled efficient electron transfer from N to Cu O,increasing significantly the fraction of SCR-active Cu^(+)sites in the *** study puts forward a new idea for manipulating and utilizing the interplay of defects and N-dopants on carbon surfaces to fabricate Cu^(+)-rich Cu catalysts for efficient abatement of slip NH_(3)emissions via selective oxidation.

关键词： NH_(3)-SCO XANES Localized etching N-doping N_(2) selectivity i-SCR

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Transcriptome and metabolome analysis of preharvest internal browning in Nane plum fruit caused by high temperature

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Horticultural Plant Journal 2024年第5期10卷 1099-1111页

作者： Cheng Peng Linping Deng Hejun Tan Wancong Meng Jianliang Luo Zengwen Zhang Huiqiong Chen Jishui Qiu Xiaoxiao Chang Yusheng Lu Institute of Fruit Tree Research Guangdong Academy of Agricultural SciencesKey Laboratory of South Subtropical Fruit Biology and Genetic Resource UtilizationMinistry of Agriculture and Rural AffairsGuangdong Provincial Key Laboratory of Tropical and Subtropical Fruit Tree ResearchGuangzhouGuangdong 510640China Lechang Lingnan Institute of Deciduous Fruit Tree Research ShaoguanGuangdong 512200China

The preharvest internal browning of Nane plum fruit,with no visible effects on the appearance of the fruit,has become a serious problem in recent years in its production area in guangdong Province,*** study investigated the effects of environmental factors,including temperature,on Nane plum internal *** orchards at different elevations with different incidences of internal browning were *** fruits with different internal browning incidence levels,the internal browning mechanism was analyzed with transcriptome and metabolome *** results revealed decreased internal browning at high *** treatment significantly reduced internal browning,whereas bagging and insect-proof net-covering treatments significantly increased internal *** bagging and net coverings increase the local ambient temperature,the findings suggest that high temperature is an important factor influencing the internal browning of Nane *** metabolome experiments showed that with increased internal browning,the levels of phenolic hydroxyls such as catechol increased,with simultaneous increases in hydrogen peroxide content and oxidase *** can be speculated that the oxidation of phenolic hydroxyl substances is the main cause of the preharvest browning of Nane *** analysis revealed the increased expression of calcium signaling-related and downstream effector genes and indicated an important role of calcium in internal browning,possibly due to its increased content in the ***,with increasingly serious internal browning,genes related to photosynthesis were down-regulated,while genes related to senescence were up-regulated,thus suggesting the up-regulation of the process of cell senescence during internal *** conclusion,heat stress should be eliminated to reduce preharvest internal browning in Nane plum.

关键词： Nane plum Fruit internal browning High temperature Calcium

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Considerations for Planning Charging Stations on College Campuses:A Focus on Safety and Economy

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Journal of Electronic Research and Application 2024年第5期8卷 58-65页

作者： Qihong Liang Ying Lai guangdong Songshan Polytechnic Shaoguan 512126China

As intelligent networked cars become increasingly integrated into people’s lives,the charging infrastructure of new energy vehicles is becoming a significant factor in the development of the new energy vehicle *** light of the rapid growth of this market,the problem of charging stations is gradually becoming *** paper puts forward a charging station planning ***,a forecast of the charging demand must be ***,the economic viability,safety,ease of use for faculty and staff,and the rapid development of new automotive technology must be taken into ***,research and analysis of the actual data must be carried out following the requirements of the different college campuses.

关键词： New energy vehicles Charging station Safety Economy

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Effectiveness of the A3 robot on lower extremity motor function in stroke patients:A prospective,randomized controlled trial

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World Journal of Clinical Cases 2024年第24期12卷 5523-5533页

作者： Lin-Jian Zhang Xin Wen Yang Peng Wei Hu Hui Liao Zi-Cai Liu Hui-Yu Liu Department of Rehabilitation Medicine Yuebei People's HospitalShaoguan 512000Guangdong ProvinceChina Department of Rehabilitation Medicine Shaoguan First People's HospitalShaoguan 512000Guangdong ProvinceChina Department of Rehabilitation Medicine Yuebei Second People's HospitalShaoguan 512026Guangdong ProvinceChina

BACKGROUND The results of existing lower extremity robotics studies are conflicting,and few relevant clinical trials have examined short-term *** addition,most of the outcome indicators in existing studies are scales,which are not objective *** used the combination of objective instrument measurement and scale to explore the short-term efficacy of the lower limb A3 robot,to provide a clinical *** To investigate the improvement of lower limb walking ability and balance in stroke treated by A3 lower limb *** Sixty stroke patients were recruited prospectively in a hospital and randomized into the A3 group and the control *** received 30 min of A3 robotics training and 30 min of floor walking training in addition to 30 min of regular rehabilitation *** training was performed five times a week,once a day,for 2 *** t-test or non-parametric test was used to compare the threedimensional gait parameters and balance between the two groups before and after *** The scores of basic activities of daily living,Stroke-Specific Quality of Life Scale,FM balance meter,Fugl-Meyer Assessment scores,Rivermead Mobility Index,Stride speed,Stride length,and Time Up and Go test in the two groups were significantly better than before treatment(19.29±12.15 vs 3.52±4.34;22.57±17.99 vs 4.07±2.51;1.21±0.83 vs 0.18±0.40;3.50±3.80 vs 0.96±2.08;2.07±1.21 vs 0.41±0.57;0.89±0.63 vs 0.11±0.32;12.38±9.00 vs 2.80±3.43;18.84±11.24 vs 3.80±10.83;45.12±69.41 vs 8.41±10.20;29.45±16.62 vs 8.68±10.74;P<0.05).All outcome indicators were significantly better in the A3 group than in the control group,except the area of the balance *** For the short-term treatment of patients with subacute stroke,the addition of A3 robotic walking training to conventional physiotherapy appears to be more effective than the addition of ground-based walking training.

关键词： Stroke Robotics Gait Robot-assisted gait training Neurological rehabilitation Walking training

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