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Recent developments in selective laser processes for wearable devices

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Bio-Design and Manufacturing 2024年第4期7卷 517-547页

作者： Youngchan Kim Eunseung Hwang chang Kai Kaichen xu Heng Pan Sukjoon hong Optical Nanoprocessing Lab Department of Mechanical EngineeringBK21 FOUR ERICA-ACE CenterHanyang University55 Hanyangdaehak-RoSangnok-GuAnsan 15588Republic of Korea Multiscale Manufacturing Lab J.Mike Walker’66 Department of Mechanical EngineeringTexas A&M UniversityCollege StationTX 77843USA State Key Laboratory of Fluid Power and Mechatronic Systems School of Mechanical EngineeringZhejiang UniversityHangzhou 310058China

Recently,the increasing interest in wearable technology for personal healthcare and smart virtual/augmented reality applications has led to the development of facile fabrication *** have long been used to develop original solutions to such challenging technological problems due to their remote,sterile,rapid,and site-selective processing of *** this review,recent developments in relevant laser processes are summarized under two separate ***,transformative approaches,such as for laser-induced graphene,are *** addition to design optimization and the alteration of a native substrate,the latest advances under a transformative approach now enable more complex material compositions and multilayer device configurations through the simultaneous transformation of heterogeneous precursors,or the sequential addition of functional layers coupled with other electronic *** addition,the more conventional laser techniques,such as ablation,sintering,and synthesis,can still be used to enhance the functionality of an entire system through the expansion of applicable materials and the adoption of new ***,various wearable device components developed through the corresponding laser processes are discussed,with an emphasis on chemical/physical sensors and energy *** addition,special attention is given to applications that use multiple laser sources or processes,which lay the foundation for the all-laser fabrication of wearable devices.

关键词： Selective laser process Wearable device Transformative approach Laser-induced graphene Ablation Sintering Synthesis

干旱胁迫对冬小麦物质转运和不同小穗位籽粒产量的影响

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植物营养与肥料学报 2024年第6期30卷 1211-1221页

作者：陈志豪王艳杰常旭虹王德梅刘希伟杨玉双石书兵赵广才新疆农业大学农学院新疆乌鲁木齐830000 中国农业科学院作物科学研究所/农业农业部作物生理生态重点实验室北京100081

【目的】探究不同冬小麦品种物质转运和不同小穗位产量对拔节至成熟期干旱胁迫的响应。【方法】试验以常规品种济麦22和抗旱品种中麦36为材料,在自动防雨水肥控制池内进行,采用测墒补灌技术实现水分条件的控制。设置顶端小穗形成期到成... 详细信息

【目的】探究不同冬小麦品种物质转运和不同小穗位产量对拔节至成熟期干旱胁迫的响应。【方法】试验以常规品种济麦22和抗旱品种中麦36为材料,在自动防雨水肥控制池内进行,采用测墒补灌技术实现水分条件的控制。设置顶端小穗形成期到成熟期持续干旱(WS:40%~45%FC,FC为田间持水量)和对照处理(CK:80%~85%FC)。调查拔节后不同小穗位小花发育动态,强、弱势粒灌浆速率和产量等指标,以及各器官花前、花后干物质积累运转量。【结果】1)干旱胁迫促进济麦22穗中部和上部的小花原基发育进程,显著减少了小花原基数量,导致穗部发育不平衡,而对中麦36各部位小花原基发育进程和数量无显著影响。2)干旱胁迫下,抗旱品种中麦36的开花前营养器官贮藏干物质转运量(Pre-DT)和转运率(Pre-DTE)较对照条件下分别显著降低34.8%和33.2%,降低了花前贮藏干物质运转对籽粒的贡献率(Pre-DCR),但开花后干物质积累量(Post�DA)及其对籽粒的贡献率(Post-DCR)分别提高5.1%和25.7%;常规品种济麦22的花前营养器官贮藏干物质转运量对籽粒的贡献率比对照提高了32.1%,Post-DA和Post-DCR分别降低了40.4%和21.3%。干旱胁迫下,中麦36 Pre-DCR的下降主要因为茎秆Pre-DCR的降低,而济麦22的Pre-DCR比对照提高了1.4倍,主要是由穗轴和颖壳Pre-DCR的增加所致。3)济麦22叶鞘、茎秆及穗轴+颖壳中的干物质向籽粒转运受到干旱的抑制,而中麦36仅茎秆和穗轴+颖壳受到干旱的抑制。与正常条件相比,干旱致使济麦22的籽粒灌浆速率下降42%,对中麦36无显著影响。济麦22上部和中部小穗位强势粒受干旱影响较大,而中麦36上部小穗位弱势粒受干旱影响较大,表现为济麦22的穗粒数、单粒重和单穗产量降幅(7.6%、15.9%和24.3%)均高于中麦36(3.3%、9.5%和16.3%)。【结论】抗旱品种主要靠开花后干物质积累来增加籽粒产量,而常规品种主要靠转运开花前营养器官贮藏干物质来增加籽粒产量。干旱胁迫条件下,常规品种济麦22的籽粒产量降幅显著高于抗旱品种中麦36,主要原因是干旱导致济麦22不同小穗位小花原基的发育不平衡,叶鞘、茎秆及穗轴+颖壳的干物质转移到籽粒的过程均受抑制,且中部和上部小穗位强势粒受到影响,导致灌浆速率显著降低。抗旱品种中麦36在干旱胁迫下通过降低茎秆开花前营养器官贮藏干物质转运量,提高开花后营养器官干物质积累量对籽粒贡献率应对干旱胁迫,且干旱胁迫主要影响弱势粒。

关键词：小麦干旱胁迫强弱势粒物质转运产量

Effects of zinc fertilizer and short-term high temperature stress on wheat grain production and wheat flour proteins

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Journal of Integrative Agriculture 2018年第9期17卷 1979-1990页

作者： TAO Zhi-qiang WANG De-mei chang xu-hong WANG Yan-jie YANG Yu-shuang ZHAO Guang-cai Institute of Crop Sciences Chinese Academy of Agricultural Sciences/Key Laboratory of Crop Physiology and Ecology Ministry of Agriculture

Content of wheat flour proteins affects the quality of wheat flour. Zinc nutrition in wheat can change the protein content of the flour. The inconsistency and instability of wheat grain quality during grain filling while under high temperature stress （HTS） are major problems in the production of high quality wheat. At present, there is a lack of studies on zinc fertilizer and HTS effects on wheat flour protein and the content of its components. For this study, treatment combinations of four levels of zinc fertilizers and exposure to a short-term HTS, at 20 d after flowering （D20）, were tested on two wheat cultivars with different gluten levels. Individuals of a strong gluten wheat, Gaoyou 2018 （GY2018）, and a medium gluten wheat, Zhongmai 8 （ZM8）, were grown in pots at the Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing in 2015-2017. We measured grain yield and weight and the activities of two enzymes （nitrate reductase and glutamine synthetase） from the flag leaves, collected at D10 and D20. Total protein content, protein yield, and content of four protein components （albumin, gliadin, glutenin, and globulin） were measured from flour produced from the pot-grown plants. HTS significantly increased the contents of total protein, albumin, gliadin, and glutenin in wheat grains, and reduced the grain yield, grain weight, protein yield, globulin content, and flag leaf nitrate reductase （NR） and glutamine synthetase （GS） activities. The results showed that HTS and zinc fertilizer had greater impacts on the strong gluten cultivar compared to the medium gluten cultivar. Under HTS, grain yield decreased by 13 and 8% in GY2018 and ZM8, respectively; protein yield decreased by 7 and 8% in GY2018 and ZM8, respectively. Zinc fertilizer increased： grain and protein yields; grain weight; total protein, albumin, gliadin, and glutenin contents; protein yield; and NR and GS activities. In contrast, zinc fertilizer reduced the content of globulin. The add

关键词： Triticum aestivum L. zinc fertilizer strong gluten climate warming

Light interception and radiation use efficiency response to tridimensional uniform sowing in winter wheat

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Journal of Integrative Agriculture 2018年第3期17卷 566-578页

作者： tao zhi-qiang wang de-mei ma shao-kang yang yu-shuang zhao guang-cai chang xu-hong Institute of Crop Sciences Chinese Academy of Agricultural Sciences/Key Laboratory of Crop Physiology and Ecology Ministry ofAgriculture Beijing 100081 P.R. China

Improving radiation use efficiency （RUE） of the canopy is necessary to increase wheat （Triticum aesfivum） production. Tridimensional uniform sowing （U） technology has previously been used to construct a uniformly distributed population structure that increases RUE. In this study, we used tridimensional uniform sowing to create a wheat canopy within which light was spread evenly to increase RUE. This study was done during 2014-2016 in the Shunyi District, Beijing, China. The soil type was sandy loam. Wheat was grown in two sowing patterns：（1） tridimensional uniform sowing （U）; （2） conventional drilling （D）. Four planting densities were used： 1.8, 2.7, 3.6, and 4.5 million plants ha-1. Several indices were measured to compare the wheat canopies： photosynthetic active radiation intercepted by the canopy （IPAR）, leaf area index （LAI）, leaf mass per unit area （LMA）, canopy extinction coefficient （K）, and RUE. In two sowing patterns, the K values decreased with increasing planting density, but the K values of U were lower than that of D. LMA and IPAR were higher for U than for D, whereas LAI was nearly the same for both sowing patterns. IPAR and LAI increased with increasing density under the same sowing pattern. However, the difference in IPAR and LAI between the 3.6 and 4.5 million plants ha-1 treatments was not significant for both sowing patterns. Therefore, LAI within the same planting density was not affected by sowing pattern. RUE was the largest for the U mode with a planting density of 3.6 million plants ha-1 treatment. For the D sowing pattern, the lowest planting density （1.8 million plants ha-1） resulted in the highest yield. Light radiation interception was minimal for the D mode with a planting density of 1.8 million plants ha-1 treatment, but the highest RUE and highest yield were observed under this condition. For the U sowing pattern, IPAR increased with increasing planting density, but yield and RUE were the highest with a planting density of 3.6 millio

关键词： tridimensional uniform sowing extinction coefficient leaf area index leaf mass per unit area wheat

Evolution of varieties and development of production technology in Egypt wheat: A review

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Journal of Integrative Agriculture 2019年第3期18卷 483-495页

作者： Kishk Abdelmageed chang xu-hong WANG De-mei WANG Yan-jie YANG Yu-shuang ZHAO Guang-cai TAO Zhi-qiang Institute of Crop Sciences Chinese Academy of Agricultural Sciences/Key Laboratory of Crop Physiology and EcologyMinistry of AgricultureBeijing 100081P.R.China Field Crops Research Institute Agricultural Research CenterGiza 12619Egypt

Wheat was the first crop grown in Egypt, and it remains highly important. Egypt is the largest wheat importer in the world and consumes an extensive amount of bread. It is imperative for wheat scientists to decrease the large gap between production and consumption. Wheat yields in Egypt increased 5.8-fold(6.7 billion kg) between 1961 and 2017 due to variety improvement and the use of better planting methods such as the raised bed method, ideal sowing date, surge flow irrigation and farm irrigation systems, laser levelling, fertilizers, and intercropping with raised beds. In this paper, the development of wheat production techniques and variety evolution over more than five decades in Egypt have been analyzed. In particular, we have focused on the technologies, cultural practices and causes for per unit area yield increase. The main purpose was to study the issues that have arisen during wheat production and to make recommendations for smart agricultural practices. In 1981, the yield was 3 300 kg ha–1 and through the improvement of varieties, expansion of agricultural land and the adoption of modern agricultural techniques yield reached 6 500 kg ha–1 by 2017. The production growth rate was 4.1% annually, and the total grain yield increased 4.3-fold, from 1.9 billion kg in 1981 to about 8.1 billion kg in 2017. The use of new improved varieties, new cultivation techniques, and modern irrigation techniques contributed to 97.0% of the increase in yield per unit area and 1.5% of the increase in yield was due to planting area expansion. Therefore, the increase in total yield mainly depended on the increase in yield per unit area. Wheat production in Egypt has been improved through the development of breeding and cultivation techniques. The use of these new techniques, the popularization of new high-quality seed varieties, and the use of the raised bed method instead of the old method of planting in basins have made the largest contributions to increased yield. In the futur

关键词： Egypt wheat production modern techniques raised bed water saving mechanization

Heat stability of winter wheat depends on cultivars, timing and protective methods

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Journal of Integrative Agriculture 2020年第8期19卷 1984-1997页

作者： LI Qiang chang xu-hong MENG Xiang-hai LI Ding ZHAO Ming-hui SUN Shu-luan LI Hui-min QIAO Wen-chen Dryland Farming Institute Hebei Academy of Agriculture and Forestry SciencesHengshui 053000P.R.China Key Lab of Crop Drought Tolerance Research of Hebei Province Hengshui 053000P.R.China Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081P.R.China

Heat stress negatively affects wheat production in many regions of the *** present,sensitivity to heat stress remains one of the least understood aspects of wheat genetics and breeding,and measures for preventing heat stress are *** this study,we used three cultivars of winter wheat(GY2018,SL02-1 and SY20)to evaluate the effect of heat stress at different days after anthesis(DAA)on yield and *** stability of the cultivars were analyzed and evaluated for the effects of two kinds of regulators on wheat under heat stress *** treatment at 7 DAA led to the most substantial reduction in yield while GY2018 had the best heat stability with respect to yield,and demonstrated the most positive effects on several quality traits including protein content,sedimentation volume and glutenin and gliadin *** treatment at 14 DAA had the least reduction in yield,while SY20 had the best heat stability with respect to yield and heat treatment had minimal effects on *** treatment at 21 DAA had only a limited effect on yield,while SL02-1 had the best heat stability with respect to yield,but it showed the most negative effects on *** time at 14 DAA and protein content at 21 DAA can be used as indicators for detecting the stability of quality under heat *** the three studied cultivars,SY20 was the most sensitive to heat stress with the stable time decreasing from 26.4 to 9.1 min,a higher sedimentation volume at 7 DAA,and a lowerγ-gliadin content which increased 2.4-fold under high-temperature *** addition of various regulators had different effects:potassium dihydrogen phosphate(KDP)was more protective of yield with heat stress at 7 DAA,while Duntianbao(DTB)had better effects on quality with heat stress at 21 DAA.

关键词： wheat high temperature heat stability yield quality prevention

An economic and viable approach to improve wheat quality in Qinghai–Tibetan Plateau,China

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Journal of Integrative Agriculture 2022年第8期21卷 2227-2240页

作者： WANG Yu-jiao TAO Zhi-qiang WANG De-mei WANG Yan-jie YANG Yu-shuang ZHAO Guang-cai SHI Shu-bing chang xu-hong College of Agronomy Xinjiang Agricultural UniversityUrumqi 830052P.R.China Institute of Crop Sciences Chinese Academy of Agricultural Sciences/Key Laboratory of Crop Physiology and EcologyMinistry of Agriculture and Rural AffairsBeijing 100081P.R.China

Wheat flour products are the main dietary component of the Qinghai-Tibetan Plateau(QTP)population in ***,the high altitude restricts the local wheat quality and quantity,and the applied nitrogen rate is higher than the optimal rate for wheat *** this study,we considered whether reducing the amount of nitrogen fertilizer and introducing the superior varieties from the North China Plain(NCP)are viable ways to increase the wheat quality and quantity in the *** and four winter wheat cultivars from QTP and NCP,respectively,were planted in Lhasa at an altitude of 3647 m with reduced topdressing nitrogen application at the jointing *** wheat from NCP exhibited higher grain hardness index and test weight,and better flour and dough *** the topdressing nitrogen fertilizer from 135 to 75 kg N ha^(-1) at the jointing stage(with the same basal fertilization of 105 kg N ha^(-1) did not significantly(P<0.05)affect the grain yield,grain quality,flour quality or dough quality in any of the *** summary,introducing high-quality winter wheat varieties from the NCP to the Lhasa plateau is a viable way to enhance the wheat supply and quality in the *** a certain amount of the nitrogen fertilizer is an economic and feasible approach for the QTP region.

关键词： Triticum variety introduction wheat quality high altitude nitrogen

Nd:YAG water mist laser treatment for giant gestational gingival tumor: A case report

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World Journal of Clinical Cases 2024年第11期12卷 1974-1979页

作者： hong-Yu Chen Jun-Ji xu Xiu-Lin chang Pei Wu Department of Stomatology Women and Children's Hospital Affiliated to Ningbo UniversityNingbo 315012Zhejiang ProvinceChina

BACKGROUND This case of gestational gingival tumor is huge and extremely rare in clinical *** the growth location of this gingival tumor is in the upper anterior tooth area,it seriously affects the pregnant woman's speech and food,causing great pain to the *** use of Nd:YGA water mist laser to remove the gingival tumor resulted in minimal intraoperative bleeding,minimal adverse reactions,and good postoperative healing,which is worthy of clinical promotion and *** SUMMARY The patient,a pregnant woman,reported a large lump in her mouth on the first day of postpartum *** on medical history and clinical examination,the diagnosis was diagnosed as gestational gingival *** pathological biopsy also confirmed this *** use of Nd:YAG water mist laser to remove the tumor resulted in minimal intraoperative bleeding,clear surgical field of view,short surgical time,and good postoperative *** In comparison to traditional surgery,Nd:YAG water mist laser surgery is minimally invasive,minimizes cell damage,reduces bleeding,ensures a clear field of vision,and virtually eliminates postoperative edema,carbonization,and the risk of cross *** has unique advantages in oral soft tissue surgery for pregnant ***,the clinical application of Nd:YAG water mist laser for the treatment of gestational gingival tumors is an ideal choice.

关键词： Gestational gingival tumor Nd:YAG water mist laser Granulomatous gingival tumor Minimally invasive dentistry Pregnancy related diseases Oral soft tissue surgery Case report

ROS介导Nrf2/HO-1通路在纳米MnO_(2)致BV2小胶质细胞氧化损伤中的作用

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毒理学杂志 2024年第2期38卷 95-100页

作者：覃镡孙兴昌梁高峰常旭红朱慧科张佳豪张丹冯三畏孙应彪兰州大学公共卫生学院卫生毒理学系甘肃兰州730000 兰州石化总医院职业病研究所甘肃兰州730060

目的探讨ROS介导的Nrf2/HO-1通路在纳米(Nano)MnO_(2)诱导的BV2小胶质细胞氧化损伤中的作用。方法采用2.5、5.0和10.0μg/ml Nano MnO_(2)和活性氧(ROS)清除剂N-乙酰半胱氨酸(NAC)单独或联合处理BV2细胞12 h,分别建立细胞毒性和干预模... 详细信息

目的探讨ROS介导的Nrf2/HO-1通路在纳米(Nano)MnO_(2)诱导的BV2小胶质细胞氧化损伤中的作用。方法采用2.5、5.0和10.0μg/ml Nano MnO_(2)和活性氧(ROS)清除剂N-乙酰半胱氨酸(NAC)单独或联合处理BV2细胞12 h,分别建立细胞毒性和干预模型。采用DCFH-DA荧光探针检测细胞ROS水平,生化试剂盒检测细胞SOD、GSH-Px、MDA含量及·OH清除能力,Western blot及细胞免疫荧光技术检测细胞Nrf2/HO-1通路相关蛋白表达水平。结果Nano MnO_(2)可致BV2细胞活力降低,细胞膜损伤程度增加,并呈剂量依赖性(F_(细胞活力)=126.648、F_(LDH)=17.394,P<0.05)。与对照组相比,Nano MnO_(2)组BV2细胞中ROS水平升高(F=16.584,P<0.05),Nano MnO_(2)高剂量组细胞SOD和GSH-Px活力明显降低(F_(SOD)=17.394、F_(GSH-Px)=16.584,P<0.05);而Nano MnO_(2)中和高剂量组细胞·OH清除能力降低,MDA含量明显增高(F_(·OH清除能力)=5.352、F_(MDA)=5.478,P<0.05)。Nano MnO_(2)中和高剂量组BV2细胞中Nrf2蛋白磷酸化水平明显升高的同时也出现明显的Nrf2核易位现象,且HO-1蛋白表达水平亦明显升高(F_(p-Nrf2)=8.608、F_(HO-1)=7.769,P<0.05)。采用ROS清除剂NAC处理BV2细胞后,Nano MnO_(2)激活的BV2细胞Nrf2/HO-1通路被抑制(F_(p-Nrf2)=11.05、F_(HO-1)=10.19,P<0.05)。结论Nano MnO_(2)可诱导BV2小胶质细胞内ROS过量生成而致氧化应激,进而通过活化Nrf2/HO-1通路而发挥抗氧化损伤作用,但其对细胞毒性主要以氧化损伤为主。

关键词：纳米MnO_(2) BV2小胶质细胞 ROS Nrf2/HO-1通路氧化损伤