poly

摘要： 日前,领先的3D打印材料制造商Polymaker使用科思创回收聚碳酸酯开发了一款名为PolymakerTM PC-r的聚碳酸酯线材。其原材料来自含有高纯度聚碳酸酯的农夫山泉19升水桶。科思创负责将塑料废料与原生材料混合,生产再生聚碳酸酯基料。随后该基料通过挤出工艺制成线材,成为应用于电子、汽车等行业的3D打印材料。该材料通过结合3D打印技术在工业规模生产中的应用,可以为期望打造更可持续供应链的品牌提供有力支持。

摘要： 领先的3D打印材料制造商Polymaker使用科思创回收聚碳酸酯开发了一款名为Polymaker^(™)PC-r的聚碳酸酯线材。其原材料来自含有高纯度聚碳酸酯的农夫山泉19升水桶。科思创负责将塑料废料与原生材料混合,生产再生聚碳酸酯基料。随后该基料通过挤出工艺制成线材,成为应用于电子、汽车等行业的3D打印材料。

摘要： 时间的脚步奔跑至2021年下半年,市面上的真无线蓝牙耳机可以说遍地开花,几十元到数千元不等,各种价格、各种类型的都有。不过在目前的特殊环境下,工作场所已经演变为涵盖个人空间、移动式办公、共享空间和传统办公室的融合概念,每一个在职场奋斗的“打工人”都在面对更加混合的办公环境,对通话质量也有了更高的要求,不只是要自己听得见,还要对方也听得清晰,说得明白,Poly博诣Voyager Focus 2办公降噪耳机(以下简称Voyager Focus 2)或许来得正是时候。

摘要： 时间的脚步奔跑至2021年下半年,市面上的真无线蓝牙耳机可以说遍地开花,几十元到数千元不等,各种价格、各种类型的都有。市场的确很火,不过需指出的是,大多数真无线蓝牙耳机只能说听个响,用户也只是图个方便。因此,对于那些有办公需求的用户而言,Poly博诣Voyager Focus 2办公降噪耳机(以下简称Voyager Focus 2)显得有些“姗姗来迟”。

摘要： 美国Polyone公司近期宣布推出Barricade弹性体,这是其特种弹性体产品组合的最新成员.与传统热塑性硫化胶、硅橡胶和热固性橡胶相比,该弹性体基于Fortrex技术,并从Cooper标准公司获得技术许可,可改善制品的高温压缩永久变形性能,是一种易于加工又轻质的材料解决方案.

摘要： Polynt-Reichhold公司于2020年7月14日宣布,已经决定在其美国伊利诺斯州莫里斯(Morris)基地建设5万吨/年的马来酸酐工厂。此举是该公司于2019年宣布的战略整合计划的一部分。该公司表示,仍在考虑另一种关键原料邻苯二甲酸酐的生产方案,预计将在2020年底做出决定。Polynt-Reichhold公司目前在意大利生产马来酸酐和邻苯二甲酸酸酐。

摘要： 随着5G商用的到来,远程办公的优势也在日益凸显。以往囿于网速的视频类交互应用,在不久的将来会像雨后春笋一般冒出来。随着创业团队、在线培训这类硬核需求的出现,几人团队甚至1对1的小型协作会议场景将大大增加。更别提5G的到来会打破视频交互的网速限制,让未来的办公协作方式变得更加多样化。而这也给身处“5G商用元年”的我们提出了一个问题:目前的远程视频交互技术是否足够成熟到能承担起庞大的视频需求?

摘要： Well-defined P4VP-b-PBLG diblock polymer composed of poly (4-vinylpyridine) (P4VP) and poly (γ-benzyl-L-glutamate) (PBLG) was synthesized by click reaction with alkyne- and azide-functionalized homopolymers. Besides, P4VP blocks were synthesized by copper-mediated atom transfer radical polymerization (ATRP) with a chlorine-containing alkyne bifunctional initiator, and the azido-terminated PBLG homopolymers were synthesized by ring-opening polymerization (ROP) of γ-benzyl-L-glutamate with an amine-containing azide initiator. In addition, the synthesized P4VP-b-PBLG with different block ratios has been characterized by proton nuclear magnetic resonance (1H NMR), Gel permeation chromatograph (GPC) and fourier transform infrated spectroscopy (FT-IR). Then, the self-assembly behaviors of P4VP-b-PBLG have been studied by changing parameters like dripping speed and block ratio. The morphologies of self-assembly of spherical, disk-like and ellipsoid-like shape particles have been observed and analyzed by scanning electron microscopy (SEM). These results have provided guidelines for the design of macromolecular self-assembly.

摘要： In contributing to the improvement of Ferrite Magnetic nanoparticles, the effects of Poly (Vinyl Pyrrolidone) (PVP) and annealing on the structural and magnetic properties of Zinc ferrite nanoparticles (ZFNPs) synthesis were investigated in this work. The effects were evaluated using the X-ray diffraction (XRD) spectroscopy, Scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and Vi-brating sample magnetometer (VSM). The XRD analysis confirms a good formation of the inverse spinel crystal structure with an average particle size of 1.3 nm to 15.2 nm and from 1.6 nm to 21.1 nm for the ZFNPs as-prepared and PVP mediated ZFNPs for the un-annealed and annealed samples, respectively. The SEM image reveals an increase in the particle size for both the as-prepared and PVP mediated samples after annealing at 500°C. The FTIR also reveals the inverse spinel structure for the as-prepared and annealed samples, which witnesses a vibrational red shift towards a higher wave number for the annealed samples. The VSM analysis indicates the superparamagnetic behavior of PVP mediated and annealed sample with zero remanence magnetization (Mr) and Coercivity (Hc). The saturation magnetization (Ms) increases from 1.31 emu/g, for the as-prepared samples, to 4.31 emu/g after the annealing and from 1.18 emu/g, for the PVP mediated, to 6.38 emu/g after annealing. These effects have been attributed to the cationic re-arrangement on the lattice site after the annealing. This presents a superior material for various applications in nanotechnology.

摘要： BACKGROUND High mobility group box-1 (HMGB1), recognized as a representative of damageassociated molecular patterns, is released during cell injury/death, triggering the inflammatory response and ultimately resulting in tissue damage. Dozens of studies have shown that HMGB1 is involved in certain diseases, but the details on how injured hepatocytes release HMGB1 need to be elicited. AIM To reveal HMGB1 release mechanism in hepatocytes undergoing oxidative stress. METHODS C57BL6/J male mice were fed a high-fat diet for 12 wk plus a single binge of ethanol to induce severe steatohepatitis. Hepatocytes treated with H2O2 were used to establish an in vitro model. Serum alanine aminotransferase, liver H2O2 content and catalase activity, lactate dehydrogenase and 8-hydroxy-2- deoxyguanosine content, nicotinamide adenine dinucleotide (NAD+) levels, and Sirtuin 1 (Sirt1) activity were detected by spectrophotometry. HMGB1 release was measured by enzyme linked immunosorbent assay. HMGB1 translocation was observed by immunohistochemistry/immunofluorescence or Western blot. Relative mRNA levels were assayed by qPCR and protein expression was detected by Western blot. Acetylated HMGB1 and poly(ADP-ribose)polymerase 1 (Parp1) were analyzed by Immunoprecipitation. RESULTS When hepatocytes were damaged, HMGB1 translocated from the nucleus to the cytoplasm because of its hyperacetylation and was passively released outside both in vivo and in vitro. After treatment with Sirt1-siRNA or Sirt1 inhibitor (EX527), the hyperacetylated HMGB1 in hepatocytes increased, and Sirt1 activity inhibited by H2O2 could be reversed by Parp1 inhibitor (DIQ). Parp1 and Sirt1 are two NAD+-dependent enzymes which play major roles in the decision of a cell to live or die in the context of stress . We showed that NAD+ depletion attributed to Parp1 activation after DNA damage was caused by oxidative stress in hepatocytes and resulted in Sirt1 activity inhibition. On the contrary, Sirt1 suppressed Parp1 by negatively regulating its gene expression and deacetylation. CONCLUSION The functional inhibition between Parp1 and Sirt1 leads to HMGB1 hyperacetylation, which leads to its translocation from the nucleus to the cytoplasm and finally outside the cell.

摘要： 本发明提供了一种降低区熔POLY背封单抛片边缘晶孔的加工工艺，对酸腐片依次进行POLY背封、减薄和抛光，并对减薄后的清洗工序进行了优化匹配。本发明将减薄工序调整到POLY背封工序后，可将POLY背封过程产生的晶孔现象大大降低，本发明与现有工艺相比，加工步骤一样，加工成本未增加，大大提高了成品合格率，具有很高的实际应用价值。

摘要： 本发明公开了一种基于半导体制造的Poly/OX选择比获取方法，包括：将晶圆设置于多晶硅刻蚀机台内；向多晶硅刻蚀机台内通入包括氟类气体的刻蚀气体；对刻蚀气体进行电离，获得刻蚀所需的等离子体；基于刻蚀所需的等离子体，对晶圆上多晶硅层和栅氧氧化层进行刻蚀；抽取晶圆表面的等离子体，完成对多晶硅层和栅氧氧化层的刻蚀；对比不同气体流量下的等离子体对多晶硅层和栅氧氧化层的刻蚀速率，获取不同的Poly/OX选择比。本发明实现在保证多晶硅刻蚀干净的基础上提高多晶硅下的栅氧氧化层损失量的效果；能够提高栅氧氧化层的刻蚀速率，获取不同的Poly/OX选择比，提高生产效率，降低生产成本；有利于工业化生产。

摘要： 本发明提供用于捕获Poly A(+)RNA的磁珠的制备方法，包括以下步骤：将羧基磁珠、活化剂和5’端伯氨基修饰的Oligo dT探针在偶联缓冲试剂中混合，在室温下反应16～20小时，得到捕获Poly A(+)RNA的磁珠。本发明中的工艺较链霉亲和素‑生物素法可大幅降低成本、且磁珠稳定性好，不会引入外源污染源，耐受高温以及含变性剂等样本中Poly A(+)RNA的捕获。可实现操作过程的高通量、自动化、捕获效率高、操作简单、无需昂贵设备等优点。本发明还提供了一种用于捕获Poly A(+)RNA的磁珠及其应用。

摘要： 本发明公开了Poly(DMDAAC‑co‑DAMBAC)在制备杀菌剂中的应用。所述的Poly(DMDAAC‑co‑DAMBAC)为由二甲基二烯丙基氯化铵与甲基苄基二烯丙基氯化铵以摩尔比为9:1～1:9共聚形成的共聚物。本发明所述的Poly(DMDAAC‑co‑DAMBAC)水溶性好，对大肠杆菌和金黄色葡萄球菌表现出优异的杀菌作用，可以应用在工业水处理、医药、纺织、卫生保健和农药等领域。

摘要： 本发明公开了一种去除TOPCon电池制作的poly‑Si绕镀的添加剂及其清洗工艺，按重量百分比，主要包括以下组分：复合型表面活性剂0.01‑1.0％；脱泡剂0.5‑2.0％；络合剂0.3‑1.0％；正面保护剂0.01‑1.0％；反应促进剂0.5‑1.0％；余量为去离子水。本发明提供的一种去除TOPCon电池制作的poly‑Si绕镀的添加剂及其清洗工艺，本发明的添加剂是在碱体系中进行去绕镀清洗，单晶硅在碱液中的腐蚀本身就具有各向异性特征，搭配本发明添加剂的作用，各向异性会进一步放大，能够保证不破坏硅片中间正常绒面的情况下完成整个绕镀层的清洗。

摘要： 本发明公开了AuNP@PP/poly(I:C)及其制备方法与其在制备治疗胶质瘤药物中的应用，其制备过程包括：把poly(I:C)原液与AuNP@PP溶液混匀，静置，超声，得到AuNP@PP/poly(I:C)溶液。AuNP@PP/poly(I:C)能用于制备治疗抗胶质瘤的药物，配合TMZ进行治疗能获得更佳的治疗效果。

摘要： 本发明公开了一种去除TOPCon电池制作的poly‑Si绕镀的添加剂及其清洗工艺，按重量百分比，主要包括以下组分：复合型表面活性剂0.01‑1.0％；脱泡剂0.5‑2.0％；络合剂0.3‑1.0％；正面保护剂0.01‑1.0％；反应促进剂0.5‑1.0％；余量为去离子水。本发明提供的一种去除TOPCon电池制作的poly‑Si绕镀的添加剂及其清洗工艺，本发明的添加剂是在碱体系中进行去绕镀清洗，单晶硅在碱液中的腐蚀本身就具有各向异性特征，搭配本发明添加剂的作用，各向异性会进一步放大，能够保证不破坏硅片中间正常绒面的情况下完成整个绕镀层的清洗。

摘要： 本发明公开了一种与p+poly硅接触的电极浆料及其制备方法，属于电池电极浆料领域。本发明所述电极浆料包含以下重量百分比的组分：导电银粉75～88％，铝粉0.5～5％，玻璃粉2～10％，Si3N4粉0.05～2％，Y2O3粉0～1％，有机载体6～15％和其它添加剂0～3％；所述玻璃粉包含软化点为250～400°C的低软化点玻璃粉A和软化点为400～600°C的高软化点玻璃粉B，所述低软化点玻璃粉A和高软化点玻璃粉B中均包含第三主族氧化物；本发明通过在与p+poly硅接触的电极浆料中添加Si3N4粉、Y2O3粉、在玻璃粉中添加第三主族元素，很好地解决了与p+poly硅接触的电极浆料中欧姆接触与金属复合无法平衡的难题。

摘要： 本发明公开了poly‑Si绕镀去除方法及在TopCon电池制备的应用，属于太阳能电池技术领域。包括以下步骤：①清洗制绒、②正面硼扩散、③保留正面BSG，去四周BSG及背抛光、④生长隧穿氧化层及多晶硅层、⑤背面磷扩、⑥去除正面及四周PSG并保留BSG层、⑦干法去除绕镀poly‑si、⑧清洗去PSG及BSG、⑨正面氧化铝、⑩正/背面钝化层、⑪丝网印刷。本发明使用的干法刻蚀工艺对沉积的多晶硅绕镀层无论是本征层还是掺杂层都可以进行完全的刻蚀，相较于湿法清洗有其独特的优势，对车间洁净度要求相对较低，避免了污水处理额外增加的成本，成本更低，节约工艺时间和生产成本。

摘要： 本发明公开了一种扩增或者检测含有全长poly(A)的全长转录组cDNA的方法。所述方法包括：(1)单细胞反应制备；(2)末端延伸：以带Poly(dT)的10×barcoded gel beads为模板，使带poly(A)的转录本末端延伸得单链的产物1；(3)模板置换：对所述产物1进行反转录，在反转录产物后的3’末端添加3个碱基C；并添加TSO引物进行反应得产物2；(4)PCR扩增：对所述产物2进行PCR扩增。本发明提高了对单细胞全长转录组的建库通量，弥补了目前单细胞转录组检测不能检测全长poly(A)的技术空白。