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Preparation, Crystallization and Mechanical Properties of Potassium Aluminosilicate Glass-ceramics
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作者 郑伟宏 黄猛 +4 位作者 GAO Zipeng ZHANG Hang YUAN Jian TIAN Peijing PENG Zhigang 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS CSCD 2024年第3期587-595,共9页
In this study,transparent K_(2)O-Al_(2)O_(3)-SiO_(2)(KAS)glass-ceramics with leucite as the main crystalline phase were prepared by melting-quench method and two-step heat treatment.The effects of SiO_(2)/Al_(2)O_(3) ... In this study,transparent K_(2)O-Al_(2)O_(3)-SiO_(2)(KAS)glass-ceramics with leucite as the main crystalline phase were prepared by melting-quench method and two-step heat treatment.The effects of SiO_(2)/Al_(2)O_(3) ratio and heat treatment on crystallization and mechanical properties were studied.The crystallization kinetics and X-Ray Diffraction(XRD)results showed that SiO_(2)/Al_(2)O_(3) ratio and heat treatment system had a direct impact on the crystallization behavior of potassium aluminosilicate glass-ceramics.When heat-treated at 680℃/2 h and 780℃/1 h,cracks generated on the surface of the sample with the addition of SiO_(2)/Al_(2)O_(3)=4.8(in mol)due to the huge difference in the coefficient of thermal expansion between glass matrix and surface.When the addition of SiO_(2)/Al_(2)O_(3)(in mol)was 4,the sample with leucite as the main crystalline phase showed an excellent fracture toughness(1.46 MPa·m^(0.5))after the heat treatment of 680℃/2 h and 780℃/5 h.And there was a phase transformation from kaliophilite to leucite.The crystalline phases of the sample heat-treated at 680℃/8 h and 780℃/1 h were leucite and kaliophilite,which resulted in the visible light transmittance of 63%and the fracture toughness of 0.91 MPa·m^(0.5).Furthermore,after the heat treatment of 680℃/2 h and 780℃/5 h,the main crystalline phase of the sample with SiO_(2)/Al_(2)O_(3)=3.2(in mol)was still kaliophilite.Because leucite only grows on the surface of the sample and is hard to grow inward,it is hard to achieve the bulk crystallization of leucite in the sample with SiO_(2)/Al_(2)O_(3)=3.2(in mol). 展开更多
关键词 LEUCITE glass-ceramic kaliophilite crystallization kinetics
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Glass-Ceramics with High Strength and High Transmittance Obtained by Multi-Factor Controlling
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作者 胡云坤 RAO Yu +4 位作者 WANG Mingzhong XU Yinsheng XIA Mengling TAO Haizheng 陆平 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS CSCD 2024年第3期551-560,共10页
The presence of Li_(2)Si_(2)O_(5) and LiAlSi_(4)O_(10) could effectively improve the elastic modulus and transmittance of lithium disilicate(LD)glass-ceramics.Through synergistically modulation of the crystal content ... The presence of Li_(2)Si_(2)O_(5) and LiAlSi_(4)O_(10) could effectively improve the elastic modulus and transmittance of lithium disilicate(LD)glass-ceramics.Through synergistically modulation of the crystal content and grain size,we obtained high strength and high transmittance of LD glass-ceramics.The optimal sample had a high transmittance of 90.3%,the hardness was 7.72 GPa,the fracture toughness was 1.07 MPa·m^(1/2),and the elastic modulus was 103.1 GPa. 展开更多
关键词 lithium disilicate glass-ceramicS TRANSMITTANCE mechanical properties
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Isotropic sintering shrinkage of 3D glass-ceramic nanolattices:backbone preforming and mechanical enhancement
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作者 Nianyao Chai Yunfan Yue +3 位作者 Xiangyu Chen Zhongle Zeng Sheng Li Xuewen Wang 《International Journal of Extreme Manufacturing》 SCIE EI CAS CSCD 2024年第2期418-426,共9页
There is a perpetual pursuit for free-form glasses and ceramics featuring outstanding mechanical properties as well as chemical and thermal resistance.It is a promising idea to shape inorganic materials in three-dimen... There is a perpetual pursuit for free-form glasses and ceramics featuring outstanding mechanical properties as well as chemical and thermal resistance.It is a promising idea to shape inorganic materials in three-dimensional(3D)forms to reduce their weight while maintaining high mechanical properties.A popular strategy for the preparation of 3D inorganic materials is to mold the organic–inorganic hybrid photoresists into 3D micro-and nano-structures and remove the organic components by subsequent sintering.However,due to the discrete arrangement of inorganic components in the organic-inorganic hybrid photoresists,it remains a huge challenge to attain isotropic shrinkage during sintering.Herein,we demonstrate the isotropic sintering shrinkage by forming the consecutive–Si–O–Si–O–Zr–O–inorganic backbone in photoresists and fabricating 3D glass–ceramic nanolattices with enhanced mechanical properties.The femtosecond(fs)laser is used in two-photon polymerization(TPP)to fabricate 3D green body structures.After subsequent sintering at 1000℃,high-quality 3D glass–ceramic microstructures can be obtained with perfectly intact and smooth morphology.In-suit compression experiments and finite-element simulations reveal that octahedral-truss(oct-truss)lattices possess remarkable adeptness in bearing stress concentration and maintain the structural integrity to resist rod bending,indicating that this structure is a candidate for preparing lightweight and high stiffness glass–ceramic nanolattices.3D printing of such glasses and ceramics has significant implications in a number of industrial applications,including metamaterials,microelectromechanical systems,photonic crystals,and damage-tolerant lightweight materials. 展开更多
关键词 3D printing isotropic shrinkage femtosecond laser two-photon polymerization structural glass-ceramics
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Properties of Ultra-low Thermal Expansion LAS Transparent Glass-ceramics Prepared by Spodumene
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作者 何峰 何子君 +2 位作者 ZHOU Zhiqiang TIAN Yingliang ZHAO Zhiyong 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS CSCD 2024年第3期541-550,共10页
The glass-ceramics were prepared with the spodumene mineral as the main raw material,and the effects of ZrO_(2)replacing TiO_(2)on the samples were systematically investigated.The results show that the substitution of... The glass-ceramics were prepared with the spodumene mineral as the main raw material,and the effects of ZrO_(2)replacing TiO_(2)on the samples were systematically investigated.The results show that the substitution of ZrO_(2)for TiO_(2)is not conductive to precipitate𝛽β-quartz solid solution phase,but can improve the transparency and flexural strength of glass-ceramics.And the glass-ceramic with the highest visible light transmittance(87%)and flexural strength(231.80 MPa)exhibits an ultra-low thermal expansion of-0.028×10^(-7)K^(-1)in the region of 30-700℃. 展开更多
关键词 ultra-low thermal expansion LAS transparent glass-ceramics substitution of ZrO_(2)for TiO_(2) spodumene mineral
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CGF联合Bio-Oss材料在上颌窦底提升术同期种植修复中的应用
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作者 刘云 王瑞春 关振群 《中国美容医学》 CAS 2024年第10期142-146,共5页
目的:探讨浓缩生长因子(Concentrated growth factor,CGF)联合Bio-Oss材料在改良经牙槽嵴顶上颌窦底提升术种植治疗中的应用价值。方法:选取笔者医院2018年5月-2021年12月口腔门诊采用改良经牙槽嵴顶上颌窦底提升术后同期接受种植治疗... 目的:探讨浓缩生长因子(Concentrated growth factor,CGF)联合Bio-Oss材料在改良经牙槽嵴顶上颌窦底提升术种植治疗中的应用价值。方法:选取笔者医院2018年5月-2021年12月口腔门诊采用改良经牙槽嵴顶上颌窦底提升术后同期接受种植治疗的98例患者作为研究对象,采用随机数字表法分为两组。对照组:49例,患者术中植入Bio-Oss骨填充材料;联合组:49例,患者术中植入CGF联合Bio-Oss的骨填充材料,对比两组患者术后不同时间新形成的骨密度,种植体植入前后患者牙周健康指标及种植体的稳定性差异。结果:术前,两组患者牙槽骨密度HU值比较差异无统计学意义(P>0.05);术后3个月、6个月,联合组的牙槽骨密度HU值均低于对照组,差异具有统计学意义(P<0.05);术后1个月、3个月、6个月、12个月时,联合组龈沟液出血指数与对照组比较,差异无统计学意义(P>0.05);术后1个月、3个月,联合组的牙周探诊深度与对照组比较,差异无统计学意义(P>0.05);术后6个月、12个月,联合组的牙周探诊深度小于对照组(P<0.05);术后6个月、12个月,联合组植入体的植入扭矩值与对照组比较,差异无统计学意义(P>0.05);术后12个月,联合组的种植体稳定系数大于对照组(P<0.05)。结论:改良经牙槽嵴顶上颌窦底提升术后行同期种植修复治疗中,植入CGF联合Bio-Oss的骨填充材料对于促进早期牙槽骨成骨能力形成及提高种植体植入稳定性较单纯Bio-Oss填充材料更有优势。 展开更多
关键词 浓缩生长因子 bio-Oss材料 牙槽嵴顶 上颌窦底提升术 种植
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Rubidium-modified bioactive glass-ceramics with hydroxyapatite crystals for bone regeneration 被引量:6
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作者 Yan-ni TAN Wen-juan CHEN +2 位作者 Wei WEI Qian-li HUANG Xiang HE 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2021年第2期521-532,共12页
In order to study the influence of rubidium(Rb)addition on the phase composition,microstructure,mechanical properties and cell response of bioactive glass-ceramics,CaO−SiO2−Na2O−B2O3−MgO−ZnO−P2O5 glass system was desi... In order to study the influence of rubidium(Rb)addition on the phase composition,microstructure,mechanical properties and cell response of bioactive glass-ceramics,CaO−SiO2−Na2O−B2O3−MgO−ZnO−P2O5 glass system was designed with and without addition of Rb.The results show that hydroxyapatite(HA)and Mg−whitelockite(Ca18Mg2H2(PO4)14)crystalline phases are formed in the glass matrix without Rb.After the addition of Rb,only HA phase is detected.The grain size of the crystals in the glass-ceramics is larger with the addition of Rb than that of samples without Rb.Rb addition can improve the bending strength of glass-ceramics.The cultivation of human bone marrow mesenchymal stem cells(hBMSCs)on Rb-containing glass-ceramics demonstrates enhanced cell adhesion,proliferation and ALP activity.In conclusion,Rb-modified glass-ceramics exhibit good mechanical property,excellent bioactivity and biocompatibility,which have potential for bone regeneration application. 展开更多
关键词 CaO−SiO2−Na2O−B2O3−MgO−ZnO−P2O5 RUBIDIUM bioactive glass-ceramics HYDROXYAPATITE human bone mesenchymal stem cells
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Bio-VOC^(TM)呼吸采样器样品转移流程评价及优化
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作者 张晓宇 刘喆 +1 位作者 董小艳 王秦 《地球环境学报》 CSCD 2024年第3期526-534,共9页
人体呼出气中挥发性有机化合物(VOCs)分析已应用于环境暴露评估和疾病诊断等领域,其中肺泡气可以排除来自周围环境以及口腔和鼻腔内死腔气体的干扰,准确反映暴露及内源性代谢物水平。对采集肺泡气的Bio-VOC^(TM)呼吸采样器转移样品至吸... 人体呼出气中挥发性有机化合物(VOCs)分析已应用于环境暴露评估和疾病诊断等领域,其中肺泡气可以排除来自周围环境以及口腔和鼻腔内死腔气体的干扰,准确反映暴露及内源性代谢物水平。对采集肺泡气的Bio-VOC^(TM)呼吸采样器转移样品至吸附管的常规操作流程进行评价及优化。使用Bio-VOC^(TM)呼吸采样器采集含有丙酮、异戊二烯、乙醇、正丁醇、正己烷和正庚烷6种VOCs的呼出气模拟样品,比较不同方式转移至吸附管对模拟样品转移效率的影响,采用热脱附-气相色谱-质谱法(TD-GC-MS)对吸附管中样品进行分析,并将优化转移方式应用于实际人群呼出气样品分析。结果表明:按照Bio-VOC^(TM)呼吸采样器常规转移方式,模拟样品中6种VOCs的转移效率均低于50%且不稳定;降低转移流量后,转移效率有所提高,进一步优化后转移效率可达90.0%—101.0%,相对标准偏差均小于5%。转移方式优化后,检测到的人体呼出气样品中3种VOCs的峰面积响应值显著提高(P<0.01)。优化方式提高了使用Bio-VOC^(TM)呼吸采样器采集肺泡气进行VOCs分析的准确性和可靠性,为肺泡气采集方法的标准化提供了科学依据。 展开更多
关键词 呼出气 bio-VOC^(TM) 吸附管 转移效率 优化
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Bio-MOF-11(Co)活化过一硫酸盐去除废水中的罗丹明B和Cu^(2+)
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作者 张霞玲 苏冰琴 +3 位作者 宋鑫峂 赵文博 林嘉伟 卫月星 《中国环境科学》 EI CAS CSCD 北大核心 2024年第2期755-767,共13页
采用Bio-MOF-11(Co)活化过一硫酸盐(PMS)同步去除废水中的罗丹明B(RhB)和Cu^(2+).考察了Bio-MOF-11(Co)投加量、PMS浓度、初始pH值、反应温度、RhB初始浓度和Cu^(2+)浓度对RhB降解和Cu^(2+)去除的影响,并采用响应面分析法优化了降解RhB... 采用Bio-MOF-11(Co)活化过一硫酸盐(PMS)同步去除废水中的罗丹明B(RhB)和Cu^(2+).考察了Bio-MOF-11(Co)投加量、PMS浓度、初始pH值、反应温度、RhB初始浓度和Cu^(2+)浓度对RhB降解和Cu^(2+)去除的影响,并采用响应面分析法优化了降解RhB的反应条件.结果表明,RhB的降解符合伪一级反应动力学.Cu^(2+)最大吸附量为22.98mg/g.在RhB初始浓度为20mg/L、Cu^(2+)浓度为2.5mg/L、Bio-MOF-11(Co)浓度为80mg/L、PMS浓度为1.0mmol/L、初始pH值为7的条件下,反应15min后,RhB降解率达到98.72%,Cu^(2+)去除率为73.53%,.自由基淬灭实验证实,RhB的降解通过非自由基(~1O_(2))和自由基(SO_(4)^(-)·、·O_(2)^(-)和·OH)氧化的途径共同完成,Cu^(2+)主要通过Bio-MOF-11(Co)的吸附作用被去除.紫外可见吸收光谱分析结果推测了RhB可能的降解路径.Bio-MOF-11(Co)活化PMS高级氧化工艺可实现同步去除有机污染物和重金属. 展开更多
关键词 bio-MOF-11(Co) 过一硫酸盐 罗丹明B 铜离子 反应机制
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牙种植同步植入Bio-Oss骨粉对牙槽骨骨量缺失患者临床效果的观察
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作者 顾春梅 袁平丽 +1 位作者 马文杰 汪青风 《口腔材料器械杂志》 2024年第3期183-187,共5页
目的探讨牙槽骨骨量缺失患者牙种植体植入时同步植入Bio-Oss骨粉的效果。方法采用回顾性分析2021年1月至2023年1月我院收治的牙槽骨骨量缺失患者104例,根据种植方式分为对照组和试验组,各52例。对照组实施单纯牙种植体植入,在缺失的牙... 目的探讨牙槽骨骨量缺失患者牙种植体植入时同步植入Bio-Oss骨粉的效果。方法采用回顾性分析2021年1月至2023年1月我院收治的牙槽骨骨量缺失患者104例,根据种植方式分为对照组和试验组,各52例。对照组实施单纯牙种植体植入,在缺失的牙槽骨内植入合适的螺纹植入物,试验组在此基础上同步植入Bio-Oss骨粉覆盖。参照中国卫生部制定的标准评价术后6个月疗效,并对比两组手术前后感觉神经动作电位(SNAP)测量结果、生活质量及术后各时期新生骨厚度、骨密度变化情况。结果试验组临床总有效率为98.08%(51/52),高于对照组的84.62%(44/52)(P<0.05);试验组术后6个月10 mV、50 mV、100 mV、1000 mV值均高于对照组(P<0.05);试验组术后6个月的生理功能、社会功能、情感职能、精神健康、活力评分均高于对照组(P<0.05);试验组术后1个月、3个月的新生骨厚度高于对照组,术后1个月、3个月、6个月的新生骨密度高于对照组(P<0.05)。结论牙槽骨骨量缺失患者牙种植体植入时同步植入Bio-Oss骨粉可提高临床疗效,改善神经功能及生活质量,促进新骨形成。 展开更多
关键词 牙槽骨骨量缺失 牙种植 bio-OSS 骨粉 疗效 神经功能 生活质量
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仿酶生物处理杨木心材Bio-APMP制浆废水及回用
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作者 周俊怡 谢益民 +4 位作者 张功侠 牛虎军 赵云博 周安乡 薛超 《中国造纸学报》 CAS CSCD 北大核心 2024年第3期114-122,共9页
杨木心材碱性过氧化氢机械浆(APMP)的制浆废水不仅产生水量大,且化学需氧量(COD)较高,处理难度较大;通过白腐菌Trametes sp.48424预处理杨木心材,经碱性过氧化氢制浆得到生物处理APMP (Bio-APMP),可以有效降低制浆废水中的污染物含量,... 杨木心材碱性过氧化氢机械浆(APMP)的制浆废水不仅产生水量大,且化学需氧量(COD)较高,处理难度较大;通过白腐菌Trametes sp.48424预处理杨木心材,经碱性过氧化氢制浆得到生物处理APMP (Bio-APMP),可以有效降低制浆废水中的污染物含量,提高纸浆质量。本研究首先用内循环(IC)厌氧反应器对杨木心材Bio-APMP制浆废水进行厌氧生物处理,再利用仿酶-混凝与曝气生物滤池(BAF)相结合的组合工艺进行深度处理,探究厌氧和BAF处理的最佳工艺条件,以及仿酶络合物和絮凝剂的最佳用量。同时,研究了处理后制浆废水回用对Bio-APMP制浆性能的影响。研究结果表明,采用白腐菌生物预处理技术,Bio-APMP制浆废水的COD和木质素含量均低于传统APMP,制浆废水中的COD_(Cr)降低了15.3%。在最佳厌氧生物处理条件下,COD_(Cr)去除率为89.5%。此外,工艺优化后BAF的COD_(Cr)最高去除率为81.9%。Fe-EDTA仿酶络合物用量为15 mg/L时,仿酶-混凝法处理制浆废水效果最好,此时COD_(Cr)去除率为67.7%。利用厌氧+BAF+仿酶-混凝结合的方法深度处理Bio-APMP制浆废水,制浆废水的COD_(Cr)从11952 mg/L降至80.4 mg/L;将深度处理后的废水回用于Bio-APMP制浆过程,纸浆质量有所下降,纸张物理强度有所降低。 展开更多
关键词 bio-APMP 厌氧废水处理 曝气生物滤池 仿酶处理 废水回用
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Understanding the corrosion and bio-corrosion behaviour of Magnesium composites – a critical review
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作者 Prithivirajan Sekar S.K.Panigrahi 《Journal of Magnesium and Alloys》 SCIE EI CAS CSCD 2024年第3期890-939,共50页
Realising the potential of Magnesium(Mg),several globally leading ventures have invested in the Mg industry,but their relatively poor corrosion resistance is a never ending saga till date.The corrosion and bio-corrosi... Realising the potential of Magnesium(Mg),several globally leading ventures have invested in the Mg industry,but their relatively poor corrosion resistance is a never ending saga till date.The corrosion and bio-corrosion behaviour of Mg has gained research attention and still remains a hot topic in the application of automobile,aerospace and biomedical industries.The intrinsic high electrochemical nature of Mg limits their utilization in diverse application.This scenario has prompted the development of Mg composites with an aim to achieve superior corrosion and bio-corrosion resistance.The present review enlightens the influence of grain size(GS),secondary phase,texture,type of matrix and reinforcement on the corrosion and bio-corrosion behaviour of Mg composites.Firstly,the corrosion and bio-corrosion behaviour of Mg composites manufactured by primary and secondary processing routes are elucidated.Secondly,the comprehensive corrosion and bio-corrosion mechanisms of these Mg composites are proposed.Thirdly,the individual role of GS,texture and corrosive medium on corrosion and bio-corrosion behaviour of Mg composites are clarified and revealed.The challenges encountered,unanswered issues in this field are explained in detail and accordingly the scope for future research is framed.The review is presented from basic concrete background to advanced corrosion mechanisms with an aim of creating interest among the readers like students,researchers and industry experts from various research backgrounds.Indeed,the corrosion and bio-corrosion behaviour of Mg composites are critically reviewed for the first time to:(i)contribute to the body of knowledge,(ii)foster research and development,(iii)make breakthrough,and(iv)create life changing innovations in the field of Mg composite corrosion. 展开更多
关键词 CORROSION bio corrosion Magnesium alloys Magnesium composites Magnesium implants.
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Preparation of Machinable Bioactive Glass-ceramics by Sol-gel Method
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作者 宁青菊 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2005年第B12期70-73,共4页
The purpose of this research was to prepare machinable bioactive glass-ceramics by sol-gel method. A multi-component composite sol with great uniformity and stability was first prepared by a 2-step method. The compos... The purpose of this research was to prepare machinable bioactive glass-ceramics by sol-gel method. A multi-component composite sol with great uniformity and stability was first prepared by a 2-step method. The composite sol was then transformed into gel by aging under different temperatures. The gel was dried finally by super critically drying method and sintered to obtain the machinable bioactive glass-ceramics. Effect of thermal treatment on crystallization of the glass-ceramics was investigated by X-ray diffraction ( XRD ) analysis. Microstructure of the glass- ceramics was observed by Scanning Electron Microscopy (SEM) and the mechanism of machinability was discussed. Phlogopite and hydroxylapatite were identified as main crystal phases by XRD analysis under thermal treatment at 750℃ and 950℃ for 1.5 h separately. The relative bulk density could achieve 99% under 1050℃ for 4 h. Microstructure of the glass-ceramics showed that the randomly distributed phlogopite and hydroxylapatite phases were favorable to the machinability of the glass-ceramics. A mean bending strength of about 160- 180 MPa and a fracture toughness parameter KIC of aboat 2.1-2.3 were determined for the glass-ceramics. 展开更多
关键词 glass-ceramicS bioactivity MACHINABILITY sol-gel method
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Effectiveness of biofertilizers foliar application on yield and quality traits of flax(Linum usitatissimum L.)
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作者 Saied El Sayed A.B.Bakry +1 位作者 O.A.Nofal M.A.Abo Horish 《Oil Crop Science》 CSCD 2024年第2期91-101,共11页
Flax is considered to be one of the most significant dual-purpose crops for oil and fiber production in Egypt and worldwide.Biofertilizers have a substantial impact on various metabolic processes,including increased p... Flax is considered to be one of the most significant dual-purpose crops for oil and fiber production in Egypt and worldwide.Biofertilizers have a substantial impact on various metabolic processes,including increased photo-synthesis,endogenous hormone levels,ion absorption,nucleic acid synthesis,and protein synthesis.These factors collectively contribute to the growth and development of plants.Therefore,this study aims to investigate how three biofertilizers(Algae extract,CMS as a by-product of yeast,and Metalosate multi minerals as amino acids)can enhance both the quantity and quality of flax seed yield under sandy soil conditions.Two field experiments were conducted at the Experimental Station of National Research Centre in Nubaria District,Behira Governorate,Egypt during two seasons(2021/2022)using a randomized complete block design(RCBD).The results revealed significant differences among all tested biofertilizers in terms of various characteristics studied in flax.Foliar application of algae extract at a rate of 1.50 mL/L resulted in an increase in seed yield(ton/ha)by 26.69%&19.89%,straw yield(ton/ha)by 8.08%&17.12%,and oil yield(kg/ha)by 47.72%&33.69%compared to the control group during both seasons respectively.Foliar applications of algae extract at a rate of 1.50 mL/L along with CMS at a rate of 5 m L/L and amino acids at a rate of 1.50 mL/L demonstrated significantly higher macronutrient contents(N,P,K),micronutrient contents(Fe,Zn,Mn),seed oil content,and protein content in flax seeds during both seasons.The highest values for seed oil content and protein content%were obtained through foliar application of amino acids at a rate of 1.50 mL/L.It can be concluded that foliar sprays with these bio-fertilizers effectively improved flax performance by increasing seed straw and oil yields,nutrients oil,protein and fatty acids seeds contents. 展开更多
关键词 FLAX bio fertilizers Seeds yield Nutrient contents Quality
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在BIOS中嵌入PTN3460模块适配屏幕的方法
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作者 高为民 张艺超 陈志列 《工业控制计算机》 2024年第5期24-25,30,共3页
目前市场上需搭配LVDS屏幕的工业整机不能快速适配不同分辨率的屏幕,并且不同规格的LVDS屏幕,在使用Flash存储显示时序参数时,若需在一块主板上接不同的LVDS屏幕,均需要独立适配屏幕才能够正常显示。针对上述问题,提出一种在BIOS中嵌入P... 目前市场上需搭配LVDS屏幕的工业整机不能快速适配不同分辨率的屏幕,并且不同规格的LVDS屏幕,在使用Flash存储显示时序参数时,若需在一块主板上接不同的LVDS屏幕,均需要独立适配屏幕才能够正常显示。针对上述问题,提出一种在BIOS中嵌入PTN3460模块适配屏幕的方法,对于采用PTN3460的转接方案的显示屏,不再需要在线烧录对应屏幕分辨率专用的PTN3460固件,提高了调试效率,节约售后维护成本。 展开更多
关键词 bioS LVDS PTN3460
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RESEARCH ON A NEW TYPE OF MACHINABLE BIOACTIVE GLASS-CERAMICS
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作者 岳文海 陈仝 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 1990年第1期51-58,共8页
A new type of machinable bioactive glass-ceramics for bone substitution has been developed in the glass system SiO_2-MgO-K_2O-F^--CaO-P_2O_5, which contains Mg- muscovite [K_2Mg_5 (Si_8O_(20)) F_4] and fluorapatite as... A new type of machinable bioactive glass-ceramics for bone substitution has been developed in the glass system SiO_2-MgO-K_2O-F^--CaO-P_2O_5, which contains Mg- muscovite [K_2Mg_5 (Si_8O_(20)) F_4] and fluorapatite as the two main crystal phases. The phase separation and the crystallization of the glass have been studied. A series of tests have showed that the material is good at mechanical property and bioactivity. Espe- cially, by analysing the structure of the interface layer between the material and the bone of animal with scanning electron microscope, electron probe, etc., it has been found that the new bone hydroxya- patite is formed on the surface of the material so that the material is connected firmly with the bone. 展开更多
关键词 RESEARCH ON A NEW TYPE OF MACHINABLE bioACTIVE glass-ceramicS BONE
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Bio-Fertilizer Improved Oil Palm Seedling Growth
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作者 Gabriel Ddamulira F. Masika +2 位作者 A. Asiimwe L. Zubairi M. Otuba 《American Journal of Plant Sciences》 CAS 2024年第7期455-466,共12页
In most farming systems newly introduced commercial fertilizers to be accepted, adopted and used by farmers, their effectiveness and appropriate application rates must be exhibited. This study was conducted to validat... In most farming systems newly introduced commercial fertilizers to be accepted, adopted and used by farmers, their effectiveness and appropriate application rates must be exhibited. This study was conducted to validate the effect and rates of a bio-fertilizer (super agric) on oil palm seedling growth. The trial was laid out in a randomized complete block design (RCBD) with three application rates of 0, 4 and 8 ml/L of water (treatments) replicated thrice. Following the application of super agric to oil palm seedlings for a period of six months, observations drawn from the analysis of growth data were as follows: Three months after treatment, super agric significantly (P < 0.05) increased the height and breadth of oil palm seedling compared to those which were not applied with super agric. The results also showed that when super agric was applied at a rate of 4 ml/L, the leaf length and breadth were higher compared to the control were super agric was not used. Furthermore, applications of super agric improved oil palm seedling nitrogen uptake by 31% in treatment groups as compared to the control which explained the height and breadth increase in the oil palm seedlings that were applied with super agric. On the other hand, the effect of super agric application on phosphorus uptake by seedlings was not significant. Although the height, breadth, leaf width and length were all significantly affected by super agric application, the number of oil palm leaves and spears were not affected for the period the experiment was conducted. Six months after application of super agric the growth of oil palm seedlings was favorably impacted, hence we recommend super agric to be promoted among oil palm seedling growers. 展开更多
关键词 bio-FERTILIZER SEEDLING GROWTH APPLICATION Rates Super Agric
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Biophoton Radiation Affecting DNA
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作者 Qiao Bi Xinzhou Yuan 《Journal of Modern Physics》 2024年第11期1690-1707,共18页
The important component of the bio-photonic radiation is the bio-photonic solitons. Due to their existence, the bio-photonic radiation is different from ordinary electromagnetic radiation and has a very clear self-ind... The important component of the bio-photonic radiation is the bio-photonic solitons. Due to their existence, the bio-photonic radiation is different from ordinary electromagnetic radiation and has a very clear self-induced transparency. On the other hand, there are also various bio-solitons in DNA and proteins, which are manifested as various structural solitons such as kinks, or transmission solitons that use kinks as envelope waves and carry exponential and other wave functions. It is in DNA that there are two types of solitons with different properties, namely, wave envelope solitons have the function of transmitting biological binding energy and biological information, and Kink solitons only have the function of expanding or contracting double helix structures or opening and closing double helices. Their mutual cooperation enables the function of DNA to be completed. This paper proposes that the bio-photonic solitons in the bio-photonic radiation resonate with various solitons in the receptor DNA or protein as a whole (or locally), thereby transmitting biological information or genetic information, which is one of the important mechanisms for the bio-photonic radiation to transmit donors or change the genetic traits of receptors. It can be simply referred to as the soliton resonance mechanism. Furthermore, through the research and development of various instruments for collecting or amplifying plant photonic radiation signals, human cells can safely receive plant signals. This can be a process of resonance between plant photonic solitons and various biological solitons in human cells, which can play a role in regulating diseases. These experimental results and applications also provide an excellent interpretation of the soliton resonance mechanism. 展开更多
关键词 bio-Photonic Radiation bio-Photonic Solitons Resonance bio-Information DNA
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基于Bio-Argo浮标数据研究孟加拉湾中部海域溶解氧分布
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作者 徐华兵 杨丰成 +2 位作者 梁颖欣 刘宇鹏 付东洋 《生态科学》 CSCD 北大核心 2024年第1期74-80,共7页
溶解氧的分布影响着海洋生物的生存,以孟加拉湾低氧区为研究对象,利用2013—2017年该海域Bio-Argo浮标数据和卫星遥感数据,分析孟加拉湾海域海洋上层(0—200m)溶解氧的垂直分布特征,探讨孟加拉湾海表溶解氧和氧跃层时空变化及其成因。... 溶解氧的分布影响着海洋生物的生存,以孟加拉湾低氧区为研究对象,利用2013—2017年该海域Bio-Argo浮标数据和卫星遥感数据,分析孟加拉湾海域海洋上层(0—200m)溶解氧的垂直分布特征,探讨孟加拉湾海表溶解氧和氧跃层时空变化及其成因。结果表明,由于大量径流和降雨的输入,孟加拉湾海表形成显著的盐度成层,导致该海域溶解氧浓度在约40 m处开始显著降低,并在200 m以内降至20μmol·kg^(-1)以下。海表溶解氧浓度与海表温度呈负相关(r=–0.75)。氧跃层深度(DO50μmol·kg^(-1))与23℃等温线和海表面高度异常呈正相关,相关系数r分别为0.93和0.81。孟加拉湾中部低氧区海表温度是影响海表溶解氧变化的主要因素之一,氧跃层的变化则与海洋中尺度涡密切相关。 展开更多
关键词 bio-Argo浮标 溶解氧 低氧区 孟加拉湾 海表面高度异常
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富血小板纤维蛋白联合Bio-Oss骨粉植骨术治疗慢性牙周炎并发骨缺损的效果研究
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作者 冯妍 郭建茹 王德伟 《临床和实验医学杂志》 2024年第15期1652-1655,共4页
目的探讨富血小板纤维蛋白(PRF)联合Bio-Oss骨粉植骨术治疗慢性牙周炎并发骨缺损的效果。方法前瞻性选取唐山市职业技术学院附属医院2019年8月至2021年2月收治的64例慢性牙周炎并发骨缺损患者为研究对象。按照随机数表法将其分为两组,... 目的探讨富血小板纤维蛋白(PRF)联合Bio-Oss骨粉植骨术治疗慢性牙周炎并发骨缺损的效果。方法前瞻性选取唐山市职业技术学院附属医院2019年8月至2021年2月收治的64例慢性牙周炎并发骨缺损患者为研究对象。按照随机数表法将其分为两组,每组各32例。对照组给予Bio-Oss骨粉植骨术治疗,观察组基于对照组条件施加PRF修补。记录并比较两组术前、术后1个月的炎症因子[白细胞介素(IL)-4、IL-6、肿瘤坏死因子α(TNF-α)、γ干扰素(IFN-γ)],术前、术后3个月的牙周相关指标[牙周探诊深度(PD)、附着水平(AL)及出血指数(BI)],及术前、术后1个月、术后3个月的菌落情况,术后3个月的创面愈合和咀嚼功能。结果观察组患者术后1个月的血清IL-4、IL-6、TNF-α、IFN-γ水平分别为(26.30±5.61)ng/L、(7.21±0.66)ng/L、(1.31±0.10)mg/L、(82.89±11.06)ng/L,均明显低于对照组[(34.42±6.97)ng/L、(11.32±1.07)ng/L、(1.75±0.13)mg/L、(90.12±13.87)ng/L],差异均有统计学意义(P<0.05)。观察组术后3个月的PD、AL值分别为(4.15±0.79)、(3.16±0.87)mm,均明显低于对照组[(5.09±1.01)、(4.56±1.12)mm],差异均有统计学意义(P<0.05);两组术后BI比较,差异无统计学意义(P>0.05)。观察组术后1、3个月的3种主要菌落的数量及占总菌落的百分率均明显低于对照组,差异均有统计学意义(P<0.05)。术后3个月,观察组创面甲级愈合率为87.50%,高于对照组(65.63%),差异有统计学意义(P<0.05)。术后3个月,观察组患者的咀嚼功能评分为(9.38±0.46)分,明显高于对照组[(7.12±0.39)分],差异有统计学意义(P<0.05)。结论PRF联合Bio-Oss骨粉植骨术治疗能够有效改善慢性牙周炎并发骨缺损患者的牙周状况,能显著降低患者血清炎症因子水平,能够更好地改善患者的牙周状况,并获得良好的创面愈合效果。 展开更多
关键词 富血小板纤维蛋白 bio-Oss骨粉植骨术 慢性牙周炎 骨缺损
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Analysis of the Fertilizing and Bioremediation Potential of Leaf Litter Compost Amendment in Different Soils through Indexing Method
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作者 Sophayo Mahongnao Pooja Sharma +1 位作者 Arif Ahamad Sarita Nanda 《Journal of Environmental Protection》 2024年第3期265-297,共33页
This research study explored the efficacy of leaf litter compost as a sustainable soil amendment with the objective of promoting soil health and mitigating the accumulation of potentially toxic elements. The investiga... This research study explored the efficacy of leaf litter compost as a sustainable soil amendment with the objective of promoting soil health and mitigating the accumulation of potentially toxic elements. The investigation encompassed the impact of various organic compost amendments, including leaf compost, cow dung manure, kitchen waste compost, municipal organic waste compost, and vermicompost. The study employed Inductively Coupled Plasma Mass Spectrometry (ICP-MS) to evaluate soil nutrient levels and concentrations of Potentially Toxic Elements (PTEs) such as arsenic, chromium, cadmium, mercury, lead, nickel, and lithium. The fertilization and bioremediation potential of these compost amendments are quantified using an indexing method. Results indicated a substantial increase in overall nutrient levels (carbon, nitrogen, phosphorus, potassium, and sulfur) in soils treated with leaf compost and other organic composts. Fertility indices (FI) are notably higher in compost-amended soils (ranging from 2.667 to 3.938) compared to those amended with chemical fertilizers (ranging from 2.250 to 2.813) across all soil samples. Furthermore, the mean concentrations of PTEs were significantly lower in soils treated with leaf compost and other organic compost amendments compared to those treated with chemical fertilizers amendments. The assessment through the indexing method revealed a high clean index (CI) for leaf compost amendment (ranging from 3.407 to 3.58), whereas the chemical fertilizer amendment exhibits a relatively lower CI (ranging from 2.78 to 3.20). Consequently, leaf compost and other organic composts exhibit the potential to enhance sustainable productivity, promoting soil health and environmental safety by improving nutrient levels and remediating potentially toxic elements in the soil. 展开更多
关键词 bio-Compost Soil Fertility Potentially Toxic Elements bioREMEDIATION
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