gel

摘要： This paper tested cedar essential oil as a new formaldehyde removal ingredient on gel format,it showed a better formaldehyde removal performance,reaching equilibrium at 7 h with a formaldehyde removal rate of 64%,and at 24 h with a formaldehyde removal rate of 67%.The 24 h formaldehyde removal rate increased by 25%compared with the gel without cedar essential oil,and efficiency is improved by 60%.The ingredients come from natural sources with a woody aroma,which can soothe the body and mind.After the stability test,the formaldehyde removal gel has no odor,precipitation or discoloration.

摘要： During the displacement of water plugging with binary flooding in internally heterogeneous reservoirs,it is essential to understand the distributions of remaining oil as well as the oil displacement mechanisms at different stages.In this study,two types of internally heterogeneous systems,i.e.,vertical and horizontal wells are investigated experimentally through a microscopic approach.The results show that plugging agent types have a greater impact on oil recovery than well types,and foam injection can enhance oil recovery more effectively than gel injection.Additionally,the injection sequence of plugging agents significantly affects oil displacement efficiency.Injecting gel after foam is more beneficial.According to the present results,the main formation mechanisms of remaining oil in each displacement stage are influenced by:capillary force,viscous force,inertial force,shear force,microscopic fingering&channeling.

摘要： Randomly amplified polymorphic DNA(RAPD)is a tremendously convenient approach used to discriminate between Brassica species owing to its accuracy and speed.RAPD primers generate adequate genetic information that can be used in the primer-marker system.In this work,twenty RAPD-PCR based markers were executed to generate polymorphic data,like polymorphic information content(PIC),mean resolving power(MRP),resolving power(RP),effective multiplex ratio(EMR),and marker index(MI)for the first time and genetic distance among and between six Brassica species were calculated.Our results indicated that 20 primers produced a total of 231 scored band and generated 87%polymorphic bands.Average PIC,MRP,RP,MI,and EMR values were 0.088,0.65,6.7,0.78,and 8.9,respectively.PIC showed an overall negative correlation with MRP,RP,MI,and EMR,whereas MRP,RP,and EMR,were positively correlated with each other.Genetic identities ranged from 41.99%(between Brassica napus and Brassica oleracea)to 68.83%(between Brassica campestris and Brassica oleracea).Dendrogram results showed no clustering between species except between Brassica campestris and Brassica nigra.Nevertheless,these results will be helpful to acquire useful information about the markers and their use to determine the genomic structures of Brassica species.Further,based on genetic distance and polymorphic information,new hybrids can be developed for effective oilseed production.

摘要： A supramolecular gelator based on the bistable [c2]daisy chain rotaxane is designed and synthesized. The reversible actuation of the [c2]daisy chain renders the formed supramolecular gel with acid/base-responsive switching between gel and monomer solution. The efficient switching process is attributed to the ring-sliding effect of the rotaxane in response to acid/base stimuli.The ring-inhibited hydrogen bonding stacking results in a nearly quantitatively disassembly of the gel network after addition of base which is hard to be realized by traditional heating strategy in hydrogen-bonding-supported gel.

摘要： This study aimed to determine the medicinal significance of traditionally used Aloe plants by testing their crude extracts and Anthraquinone fractionates for antimicrobial activity against standard stock organisms. The significance of this study is to promote the discovery of new alternative to drugs currently being used. The gel and leaf cover of these four plants were extracted using cold ethanol extraction method and Anthraquinones were fractionated from the leaf cover using the liquid-liquid extraction technique. The extracts obtained were then screened in different concentrations for their antimicrobial activity against stock organisms Staphylococcus aureus (ATCC1 6538) and Escherchia coli (ATCC 25922) to access the activity of the aloe species against gram positive and gram negative bacteria. It was determined that the crude extracts of the gel and leaf part of the four aloe species had antimicrobial activity against gram positive (Staphylococcus aureus) and gram negative (Escherchia coli) bacteria and Escherchia coli showed the least sensitivity towards the four plant extracts while Staphylococcus aureus was highly susceptible.

摘要： The microwave absorption properties of polymer composite PANI/PVA/NiFe2O3 are investigated. The polymer composites of PANI/PVA and NiFe2O3 are prepared in two steps. NiFe2O3 is synthesized by modified sol gel method and PANI by chemical polymerization method. Microwave absorption parameters of polymer composite are measured at X-band. The microwave absorption is found to be -28 dB (99%) at 10.2 GHz. Different characterization techniques such as SEM-EDX, FTIR and XRD are done. The SEM result shows flakes like structure for PANI/PVA and crystalline structure for NiFe2O3. FTIR of the composite reveals the interaction between the PANI/PVA and NiFe2O3.

摘要： The integration of ferroelectric materials as thin films has attracted considerable attention these last years thanks to their outstanding performances that allow considering new features for the realization of photovoltaic devices. Our study focuses on investigating structural, dielectric and ferroelectric properties of undoped and Mn doped PZN-4.5PT nanoparticles thin films on Silicon substrate. We fabricate very stable PZN-4.5PT nanoparticles thin films deposited on nanostructured silicon substrate with giant relative dielectric permittivity of 2.76 × 104 and 17.7 × 104 for respectively the undoped and Mn doped thin films. These values are very large compared to those found in single crystals and might be explained by the influence of the gel in which nanoparticles were dispersed. The SEM images show the crystallization of new hexagonal phases on the film surface probably coming from interaction between Si and the gel. The hysteresis loops permitted to determine the spontaneous polarization (Ps), remnant polarization (Pr) and coercive field Ec which are equal to 11.73 μC/cm2, 10.20 μC/cm2 and 20 V/cm, respectively for the undoped nanoparticles thin film and 22.22 μC/cm2, 19.32 μC/cm2 and 20 V/cm respectively for the Mn doped one. These values are high and correspondto the best ones found in literature compared to typical ferroelectric thin films.

摘要： Molluscan smooth muscles, such as the bivalve adductor muscles and the mussel anterior byssus retractor muscles (ABRM), exhibit a unique contraction called “catch”. Catch contraction is regulated through twitchin phosphorylation and dephosphorylation. Twitchin from the ABRM of the Mediterranean mussel, Mytilus galloprovincialis, is phosphorylated by cAMP-dependent protein kinase (PKA), and PKA phosphorylation sites are located in both the N- and C-terminal regions of the twitchin molecule. The D2 site, which is adjacently located to the C-terminus, participates in forming a myosin, actin, and twitchin complex that is thought to contribute towards the maintenance of tension in the catch state. In contrast, although it has been reported to interact with thin-filaments, the molecular function of the region including the D1 site has remained largely unstudied. Three additional PKA consensus sequences were identified near the D1 site;however, it was not known if these sites could be directly phosphorylated by PKA. Here, we performed phosphorylation assays to identify phosphorylation sites near the D1 site using recombinant protein variants (TWD1-SSSS, TWD1-AAAS, TWD1-AASA, TWD1-ASAA, TWD1-SAAA, and TWD1-AAAA). All variants, except TWD1-AAAA (where all phosphorylatable serine residues were replaced by alanines), were phosphorylated by PKA. The four phosphorylation sites were named D1-1, D1-2, D1-3, and D1-4 (the originally identified D1) in order from the N-terminus. Phosphorylation assays using a 1/12.5 weight ratio of PKA to each TWD1 variant revealed that D1-4 was the most rapidly phosphorylated, closely followed by D1-1. However, D1-2 and D1-3 were phosphorylated at a lower level under equivalent conditions and were not phosphorylated when PKA was incubated with each TWD1 variant at a 1/100 weight ratio. Furthermore, we observed that TWD1-SSSS was phosphorylated in a stepwise fashion. These findings contribute towards the elucidation of the function of the twitchin D1 region in the regulatory system of catch contraction.

摘要： 本发明属重组减毒沙门菌领域，具体涉及一种RGD、TAT、GEL三基因重组减毒沙门菌LH430及其构建方法和应用。构建方法包括下述步骤：1)设计基因；2)PCR扩增；3)将获得的目的基因克隆到pMD‑18‑T载体中，构建了包含上述目的基因的重组减毒沙门菌LH430。本发明将RGD对肿瘤细胞的靶向性、TAT对细胞的穿透性、GEL基因的细胞凋亡作用和减毒沙门菌LH430可携带外源基因靶向肿瘤微环境的厌氧区的特性结合起来，构建出能够融合表达上述基因的重组减毒沙门菌，使得RGD‑TAT‑GEL基因能够更好地发挥靶向性及抑制凋亡的作用。

摘要： 本申请提供一种面向下一代以太网的GEL编码方法及装置，方法包括获取第一目标阈值；确定第一码字矩阵行编码和列编码所在的伽罗华域GF（2m）和第一码字矩阵的层数；确定第一码字矩阵中每层RS码的纠错能力；将信息比特置于第一码字矩阵每层的信息位部分，进行行方向子码RS编码；确定列方向BCH子码的校验矩阵；对校验矩阵进行初等变换；将初等变换后的校验矩阵进行缩减后取逆；将取逆后的逆矩阵与行编码相乘，得到行编码和列编码后的第二码字矩阵；根据第二码字矩阵，对每一列的列编码进行奇偶校验，得到的校验比特放在第二码字矩阵的第一行。采用上述方案，可在硬判决译码下满足下一代以太网的时延和性能要求。

摘要： 本公开提供了一种实现改进的前向纠错FEC编码/解码方法的编码和解码设备。具体地，编码设备用于使用空间耦合码(例如，阶梯码，编织分组码或者连续交织的分组码)，对数据符号的流进行编码，其中，至少一个广义误差定位GEL码用作空间耦合码的分量码。据此，解码设备用于使用空间耦合码，对一序列已编码的符号块进行解码，其中，至少一个GEL码用作空间耦合码的分量码。从而，设计了一种合适的空间耦合FEC码，其允许具有低复杂度解码过程的非常低时延、高吞吐量、高速率的应用，并且允许缓解错误平层。

摘要： 本发明公开一种多维复相掺静电纺SF/Gel皮肤支架的制备方法，将丝素蛋白的甲酸溶液与明胶的冰乙酸溶液混合后得到SF/Gel溶液，向SF/Gel溶液中加入粉末材料，搅拌均匀制得纺丝液，通过静电纺丝制备得到多孔纤维膜，多孔纤维膜再经过交联液处理，得到皮肤支架；本发明所使用的原材料皆为天然、无毒材料，不仅价格低廉，且容易获得；本发明制备的的皮肤支架具有良好的孔隙率、吸水率、力学性能和降解性能，且无细胞毒性，生物相容性良好，有作为皮肤支架材料的潜力。

摘要： 本发明涉及一种高强度PAMPS‑PAM‑Gel三网络水凝胶及其制备方法。本发明采用聚2‑丙烯酰胺‑2‑甲基丙磺酸微凝胶为第一网络，聚丙烯酰胺为第二网络，明胶为第三网络，制备了具有高强度的聚2‑丙烯酰胺‑2‑甲基丙磺酸‑聚丙烯酰胺‑明胶三网络水凝胶。聚2‑丙烯酰胺‑2‑甲基丙磺酸‑聚丙烯酰胺双网络水凝胶因体系为全共价交联，在受到外力作用后容易造成永久性损伤。因此将物理交联的明胶引入全共价交联的聚2‑丙烯酰胺‑2‑甲基丙磺酸‑聚丙烯酰胺双网络水凝胶中，不仅可以利用明胶中存在的活性基团通过氢键作用形成的物理交联网络改善全共价交联水凝胶永久性损伤的不足；而且三个网络之间的相互缠结可进一步提升水凝胶的力学性能。

摘要： 本发明公开了一种SVF‑GEL脂肪胶制备方法，具体步骤如下：第一步：将抽吸所获得的脂肪，进行机械乳化，静置5分钟；第二步：将提取出的脂肪组织放置在高速离心机中进行第一次离心提纯，离心机控制在1000‑1800/min，离心得到富含脂肪干细胞和细胞外基质的产物；第三步：将步骤二中第一次离心提纯后得到液体、油滴、获取乳糜状的纳米脂肪单独分离出油滴静置5小时备用；第四步：将步骤二中第一离心提纯后的纳米脂肪与步骤三中的油滴按照比例混合，通过磁力搅拌使其变成絮状物。本发明可以促使皮肤胶原蛋白的合成，达到改善肤质，抗皱促进皮肤再生的效果，完全可以填充更为精细的皱纹，这是传统科尔曼脂肪做不到的。

摘要： 本发明公开了一种基于PVC gel的驱动黏附一体化柔性抓取装置，包括抓取部上盖体和下底座；所述抓取部夹装于上盖体和下底座之间，沿上盖体边缘均匀分布，并设有若干段伸出端；所述抓取部主体为PVC gel驱动部，边缘伸出端下表面包括一层黏附阵列；所述上盖体下表面与PVC gel驱动部对应位置铺设有上部电极，所述下底座与PVCgel驱动部对应位置铺设有下部电极，所述上部电极和下部电极由导线连接供电；本发明还公开了采用固化法脱模制备PVC gel驱动部的具体步骤，基于制备的PVC gel符合材料，当施加正向电压时，PVC gel驱动部向下弯曲，实现加紧物件效果，当施加反向电压时，PVC gel驱动部向上弯曲，松开物件；黏附阵列还可以提供黏附力，用于抓取较大平面的物件。

摘要： 本发明PVC gel人工肌肉性能测试平台，属于一种测量控制技术。其特征在于：该装置是由测试基架、安装在基架上的位移传感器、安装在基架上的力传感器、用于传递PVC gel输出位移和输出力的信号传递器、信号发生模块和数据采集模块组成。该装置既能实现PVC gel驱动器在不同电压下恢复力和恢复位移的测量，又能实现其收缩力、收缩位移的测量。本发明基于激光位移传感器和力传感器，具有操作简单、可控性强、测量精准的特点。

摘要： 本发明公开了一种基于数字图像处理方法的PVC‑gel偏转角度测量方法，包括以下步骤：S01，将PVC‑gel材料布置在通电夹头上，通过相机获取PVC‑gel材料通电偏转视频；S02，将PVC‑gel材料通电偏转分解为时间序列图像，并进行数字量化处理；S03，对获取图像进行剪切分离，获取图像中PVC‑gel材料的外形信息；S04，通过数字图像处理方法，包括二值化、边缘检测方法提取图像特征；S05，通过基于多项式拟合方法，对获取的二值图像进行拟合分析；S06，获取拟合曲线的表达式，求解偏转角度，绘出关于时间的偏转角度变化曲线。本发明提供一种采用基于图像方法的非接触测量方式，快速准确，能够为软物质材料的变形检测提供有益的帮助。

摘要： 本发明公开了一种PVC‑gel薄膜制备方法及PVC‑gel薄膜扑翼飞行机构及其制备方法，包括扑翼翅膀和硅橡胶骨架，扑翼翅膀采用PVC‑gel薄膜制成，PVC‑gel薄膜的上下对应设置有正极和负极，PVC‑gel薄膜贯穿设置在硅橡胶骨架上构成柔性扑翼飞行机构，通过对正极和负极施加方波电压调节扑翼翅膀的煽动频率。本发明结构简单、可控性强、可控煽动频率，通过对正极和负极施加方波电压调节扑翼翅膀的煽动频率，在加电过程中基本不产生噪声。