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不同类型生物炭对芳香樟生长及光合特性的影响

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西北农林科技大学学报（自然科学版） 2024年第2期52卷 70-80页

作者：陈宇琳吴凤英张伟婷刘东明何峥旋毛艳玲福建农林大学资源与环境学院福建福州350002 福建农林大学土壤生态系统健康与调控福建省高校重点实验室福建福州350002 福建农林大学自然生物资源保育利用福建省高校工程研究中心福建福州350002

【目的】探究不同类型生物炭对芳香樟生长和光合特性的影响,以期为芳香樟经济林营造提供科学依据。【方法】以盆栽芳香樟优质品系‘MD1’为材料,设置对照(CK,不施化肥和生物炭)、化肥(F)、木炭+化肥(MC)和秸秆炭+化肥(JC)4个处理,在芳... 详细信息

【目的】探究不同类型生物炭对芳香樟生长和光合特性的影响,以期为芳香樟经济林营造提供科学依据。【方法】以盆栽芳香樟优质品系‘MD1’为材料,设置对照(CK,不施化肥和生物炭)、化肥(F)、木炭+化肥(MC)和秸秆炭+化肥(JC)4个处理,在芳香樟移栽前一天施入生物炭(140 g/盆)、化肥(尿素、过磷酸钙、氯化钾分别为6,2.19,0.44 g/盆),将其与土壤混匀,移栽定植后浇水灌透。移栽后测定施用不同类型生物炭对芳香樟生长指标、各器官精油含量、芳樟醇相对含量和根系活力的影响,并分析叶片光合特性和氮代谢的调控过程。【结果】1)与施用化肥处理相比,不同类型生物炭处理均可提高芳香樟株高、地径、总生物量和根系活力,且不同类型生物炭处理之间差异显著,JC处理对芳香樟植株生长的促进效果优于MC处理,其芳香樟株高、地径、总生物量和根系活力比MC处理分别增加了36.22%,8.24%,8.68%和12.80%。2)与施用化肥处理相比,不同类型生物炭处理均可显著提高芳香樟茎、叶得油率和芳樟醇相对含量,其中以JC处理芳香樟叶得油率和芳樟醇相对含量最高,分别达4.05%和94.31%。3)施用生物炭可提高芳香樟SPAD值和净光合速率,蒸腾速率随时间的变化呈先升高后降低的趋势,减少光合产物消耗;化肥处理除亚硝酸还原酶外,氮代谢酶活性显著高于其他处理。【结论】施用不同类型生物炭均能促进芳香樟生长,提高精油含量和芳樟醇相对含量,改善芳香樟的光合生理特性,其中以秸秆炭+化肥处理综合表现最优。

关键词：生物炭芳香樟生长品质光合特性

甲状腺功能亢进及甲状腺功能减退诱发老年骨质疏松的机制分析

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中国实验诊断学 2024年第3期28卷 312-318页

作者：刘瑶秦迪刘东明王岩陈雷黄丽红吉林大学中日联谊医院老年病科吉林长春130033 内蒙古民族大学附属医院内分泌科内蒙古自治区通辽028000 吉林大学中日联谊医院科研中心吉林长春130033 白城市医院急诊科吉林白城137000

目的通过对生信数据的挖掘来探究甲状腺功能亢进及甲状腺功能减退与老年骨质疏松之间的关联及治疗靶点。方法通过GEO数据库去挖掘老年骨质疏松症的差异表达基因,以及借助人类疾病数据库筛选骨质疏松、甲亢及甲减的靶基因。将上述基因整... 详细信息

目的通过对生信数据的挖掘来探究甲状腺功能亢进及甲状腺功能减退与老年骨质疏松之间的关联及治疗靶点。方法通过GEO数据库去挖掘老年骨质疏松症的差异表达基因,以及借助人类疾病数据库筛选骨质疏松、甲亢及甲减的靶基因。将上述基因整合映射后分别得出老年骨质疏松与甲亢、甲减的交集靶点基因。借助STRING数据库构建PPI网络,并且应用Cytoscape软件进行关键基因的筛选。通过R软件进行功能富集分析。结果老年骨质疏松分别与甲亢及甲减匹配映射得到67和126个交集靶点基因。PPI网络构建得出TNF、AKT1、ALB、CD4、IL2等关键基因可能与老年骨质疏松合并甲亢相关,并且受到Ⅰ型糖尿病、糖尿病并发症中的AGE-RAGE信号通路、人类T细胞白血病病毒Ⅰ型感染、移植物抗宿主病、EGFR酪氨酸激酶抑制剂耐药性等信号通路的调节;ALB、AKT1、TP53、TNF、CTNNB1等关键基因可能与老年骨质疏松合并甲减相关,并受到糖尿病并发症中的AGE-RAGE信号通路、T17细胞分化、人类T细胞白血病病毒Ⅰ型感染、癌症中的蛋白聚糖、人巨细胞病毒感染等信号通路调节。结论TNF、AKT1、ALB、CD4、IL2可能为老年骨质疏松和甲亢共病机制的基础,ALB、AKT1、TP53、TNF、CTNNB1可能为老年骨质疏松和甲减共病机制的基础。上述发现可能为进一步探究甲亢及甲减诱发老年骨质疏松发病机制和治疗机制提供新的思路。

关键词：老年骨质疏松甲状腺功能亢进甲状腺功能减退生物信息学

Microstructure characterization and hydrogen storage properties study of Mg2Ni0.92M0.08（M = Ti, V, Fe or Si） alloys

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Progress in Natural Science:Materials International 2018年第4期28卷 464-469页

作者： Yue Zhang Hairi Zhang Xiaoli Ding dongming liu Qingan Zhang Tingzhi Si School of Materials Science and Engineering Anhui University of Technology

In the present study Mg2Ni-type compounds alloyed independently with Ti,V,Fe and Si were successfully prepared by wet-milling followed by *** these alloyed Mg2Ni compounds exhibited a similar hydrogen storage mechanism as that of pure Mg2Ni,the dissolution of Ti,V or Fe into the Mg2NiH4lattice had a considerable catalytic effect on hydrogen desorption from additional *** further structure investigations clearly indicated that the substitution of Ti for Ni could suppress the formation of the micro-twined low-temperature phase（LT2）and promote the formation of the high-temperature phase（HT）,thus resulting in remarkably improved hydrogen desorption kinetics for the Mg2Ni0.92Ti0.08–H system.

关键词： Hydrogen storage Mg-based alloys Elemental substitution Kinetics

不同类型纳米生物炭特征及对土壤镉污染修复效果的影响

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江西农业大学学报 2024年第4期46卷 1076-1085页

作者：刘东明魏圆慧罗卿福贾广昊郭宇轩毛艳玲福建农林大学资源与环境学院福建福州350002 土壤生态系统健康与调控福建省高校重点实验室福建福州350002 自然生物资源保育利用福建省高校工程研究中心福建福州350002

【目的】生物炭在重金属污染土壤上有一定修复效果,然而未改性生物炭的修复潜力往往较低,生物炭改性可有效提高生物炭表面官能团的种类和数量,增加与重金属相互作用的位点数量,进而提高重金属的修复效率。【方法】对木炭、竹炭、秸秆炭... 详细信息

【目的】生物炭在重金属污染土壤上有一定修复效果,然而未改性生物炭的修复潜力往往较低,生物炭改性可有效提高生物炭表面官能团的种类和数量,增加与重金属相互作用的位点数量,进而提高重金属的修复效率。【方法】对木炭、竹炭、秸秆炭3种类型生物炭进行纳米改性并用扫描电镜、傅里叶变换红外进行表征,采用培养试验,设置不添加生物炭对照、3种不同类型生物炭处理、3种纳米改性生物炭处理共7个处理。【结果】(1)不同类型生物炭纳米改性后表现出孔隙增多、孔径增大、粒径减小,丰富了官能团结构,使含氧官能团强度增加;(2)纳米生物炭可以提高土壤pH、有机碳(SOC)、可溶性有机碳(DOC)、易氧化有机碳(EOC)、颗粒有机碳(POC)含量,其中纳米竹炭相较于未改性竹炭处理SOC提高了20.77%,纳米秸秆炭对土壤DOC、LOC、POC提升效果最好,相较于未改性秸秆炭分别提高了17.05、10.88%、63.36%;添加生物炭也增加了土壤蔗糖酶和纤维素酶活性。(3)添加生物炭使土壤重金属镉有效性降低,改性后增强了对土壤有效态镉的转化,促使可交换态镉和可还原态镉向可氧化态镉和残渣态镉转化迁移,其有效性与土壤pH和有机碳相关。【结论】生物炭纳米改性后其含氧官能团增加,在提高土壤有机碳及降解重金属镉有效性上具有很大潜力,且不同类型纳米生物炭对土壤有机碳及镉形态的影响不同,纳米秸秆炭效果最佳。

关键词：纳米生物炭生物炭表征土壤有机碳镉形态

Modeling and Simulation of the Microstructure Evolution of the Gas-atomized Alloy Droplets during Spray Forming

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Journal of Materials Science & Technology 2003年第5期19卷 398-402页

作者： Jiuzhou ZHAO, dongming liu and Hengqiang YEInstitute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China Inst. of Metal Res. Chinese Acad. of Sci Shenyang 110016 China

In order to understand the solidification process of an atomized droplet and predict the fraction solidification of droplets with flight distance during spray forming, a numerical model based on the population dynamics approach is developed to describe the microstructure evolution under the common action of the nucleation and growth of grains. The model is coupled with droplets heat transfer controlling equations and solved for AI-4.5 wt pct Cu alloy. It is demonstrated that the numerical results describe the solidification process well.

关键词： Rapid solidification Microstructure evolution Modeling Spray forming

Littoral-cell angioma of the spleen:a case report

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Cancer Biology & Medicine 2017年第2期14卷 194-195页

作者： dongming liu Zhaohui Chen Tongtong Wang Baichang Zhang Hongyuan Zhou Qiang Li Department of Hepatobiliary Oncology Tianjin Medical University Cancer Institute and HospitalNational Clinical Research Center for CancerKey Laboratory of Cancer Prevention and Therapy

Littoral-cell angioma(LCA), a primary angioma which clinically belongs to splenic hemangioma, can be mostly found in normal spleen red sinus shore cells of reticuloendothelial cell system. The cells of LCA strongly express endothelial and tissue cell associated antigens that indicate a dual differentiation characteristic; whereas only endothelial cell markers are positive in normal spleen red sinus shore cells. Diagnosis of LCA relies on histopathology. Regular follow-up is needed to monitor recurrence and metastasis.

关键词： Splenic hemangioma case report spleen red sinus shore cells

微波消融辅助零缺血免缝合技术在肾门肿瘤剜除术中的疗效和安全性

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中华泌尿外科杂志 2024年第2期45卷 81-84页

作者：吴小荣周嘉乐陈勇辉陈伟黄吉炜张进刘东明薛蔚黄翼然上海交通大学医学院附属仁济医院泌尿科上海200127

目的探讨微波消融辅助零缺血免缝合技术应用于肾门肿瘤剜除术的疗效和安全性。方法回顾性分析2017年3月至2020年4月上海仁济医院收治的31例肾门肿瘤患者的临床资料。男23例, 女8例。中位年龄59(50, 71)岁。中位体质量指数22.0(19.7, 24.... 详细信息

目的探讨微波消融辅助零缺血免缝合技术应用于肾门肿瘤剜除术的疗效和安全性。方法回顾性分析2017年3月至2020年4月上海仁济医院收治的31例肾门肿瘤患者的临床资料。男23例, 女8例。中位年龄59(50, 71)岁。中位体质量指数22.0(19.7, 24.0)kg/m^(2)。美国东部肿瘤协作组评分0分28例, 1分3例。肿瘤位于左侧16例, 右侧15例。中位肿瘤最大径3.0(2.5, 4.0)cm。中位R.E.N.A.L.评分8(7, 8)分。中位术前估算肾小球滤过率(eGFR)91.9(78.4, 105.7) ml/(min·1.73 m^(2))。美国麻醉医师协会(ASA)分级Ⅰ级16例, Ⅱ级13例, Ⅲ级2例。31例均行后腹腔镜微波消融辅助零缺血肾肿瘤剜除术(MACS-LTE)。微波消融采用MTC-3C微波消融仪, 经操作孔道将消融探针插入肿瘤与肾交界面且靠近肿瘤基底部。消融功率为70 W, 每个周期消融时间1~3 min, 共消融1~3个周期。消融结束后, 沿肿瘤假包膜行肿瘤剜除术。结果本组31例, 29例顺利完成MACS-LTE, 1例缝合修补集合系统;1例因术中出血中转传统肾部分切除术, 阻断肾动脉主干10 min。无中转开放或根治手术者。中位手术时间100(80, 120)min。中位术中出血量50(50, 80)ml, 术后无输血病例。中位术后住院时间3(3, 4)d。术后发生尿瘘1例, 发热1例, 均经保守治疗治愈。所有肿瘤切缘均阴性, 病理诊断为透明细胞癌27例, 嫌色细胞癌3例, 乳头状肾细胞癌1例。中位随访时间25(16, 28)个月, 术后6个月中位eGFR为90.0(79.2, 100.3) ml/(min·1.73 m^(2))。所有患者均无局部复发和远处转移。结论微波消融辅助零缺血免缝合技术用于腹腔镜肾肿瘤剜除术治疗部分肾门肿瘤, 具有出血少、并发症可控的特点。

关键词：肾肿瘤肾门肿瘤腹腔镜微波消融保留肾单位手术

Deformation mechanism of roadways in deep soft rock at Hegang Xing’an Coal Mine

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International Journal of Mining Science and Technology 2013年第2期23卷 307-312页

作者： Yang Xiaojie Pang Jiewen liu dongming liu Yang Tian Yihong Ma Jiao Li Shaohua State Key Laboratory of Geomechanics and Deep Underground Engineering School of Mechanics and Civil Engineering China University of Mining & Technology

Engineering geomechanics characteristics of roadways in deep soft rock at Hegang Xing'an Coal Mine were studied and the nature of clay minerals of roadway surrounding rock was analyzed. This paper is to solve the technical problems of high stress and the difficulty in supporting the coal mine, and provide a rule for the support design. Results show that mechanical deformation mechanisms of deep soft rock roadway at Xing'an Coal Mine is of ⅠABⅡABCⅢABCD type, consisting of molecular water absorption (the ⅠAB -type), the tectonic stress type + gravity deformation type + hydraulic type (the ⅡABC -type), and the ⅢABCD -type with fault, weak intercalation and bedding formation. According to the compound mechanical deformation mechanisms, the corresponding mechanical control measures and conversion technologies were proposed, and these technologies have been successfully applied in roadway supporting practice in deep soft rock at Xing'an Coal Mine with good effect. Xing'an Coal Mine has the deepest burial depth in China, with its overburden ranging from Mesozoic Jurassic coal-forming to now. The results of the research can be used as guidance in the design of roadway support in soft rock.

关键词： Deep Clay mineral Engineering soft rock type Deformation mechanics mechanism

Power-Domain Collision-Tolerant Random Access Method with Auxiliary Beam for Satellite Internet of Things:A New Solution

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China Communications 2024年第8期21卷 236-248页

作者： Xu Yuanyuan liu Ziwei Bian dongming Zhang Gengxin School of Communications and Information Engineering Nanjing University of Posts and TelecommunicationsNanjing 210003China Institute of Communications Engineering PLA University of Science and TechnologyNanjing 210007China

There are numerous terminals in the satellite Internet of Things(IoT).To save cost and reduce power consumption,the system needs terminals to catch the characteristics of low power consumption and light *** regular random access(RA)protocols may generate large amounts of collisions,which degrade the system throughout *** near-far effect and power control technologies are not applicable in capture effect to obtain power difference,resulting in the collisions that cannot be *** fact,the optimal design at the receiving end can also realize the condition of packet power domain separation,but there are few relevant *** this paper,an auxiliary beamforming scheme is proposed for power domain signal *** adds an auxiliary reception beam based on the conventional beam,utilizing the correlation of packets in time-frequency domain between the main and auxiliary beam to complete signal *** roll-off belt of auxiliary beam is used to create the carrier-to-noise ratio(CNR)*** paper uses the genetic algorithm to optimize the auxiliary beam *** results show that the proposed scheme outperforms slotted ALOHA(SA)in terms of system throughput per-formance and without bringing terminals additional control burden.

关键词： beamforming non-orthogonal multiple access random access satellite Internet of Things