Results 21 to 30 of about 841,203 (143)
Shuitu Baochi Xuebao, 2019 研究添加木质素和生物炭对土壤氮、磷养分及水分损失的影响，降低土壤改良剂使用成本，增加造纸黑液中木质素的利用途径，促进木质素在土壤改良中的应用。试验选取生物炭改良剂与木质素作为对比，通过土柱淋溶和静态吸收法，研究不同添加量（质量分数为0，1%，2%，4%）的木质素和生物炭对土壤氮磷养分、水分、脲酶活性以及pH的影响。土壤中添加木质素和生物炭均能减缓pH变化程度；抑制土壤脲酶的活性，且在添加氮肥后的1~20天抑制效果明显，其抑制效果与添加量呈正相关。添加量为1%，2%，4%的木质素和生物炭与对照组相比 ...
宋彬 +5 more
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Zhongguo youzhi, 2023 为探索辣木籽油的高效提取方法，以辣木籽为原料，分别采用索氏抽提法、乙醇水法和水酶法提取辣木籽原油，通过脱胶、脱酸工艺制备辣木籽精炼油，测定辣木籽原油和精炼油的理化指标、叶绿素和类胡萝卜素含量及脂肪酸组成，分析不同提取方法对辣木籽原油和精炼油品质的影响。结果表明：乙醇水法对辣木籽油的气味有一定影响，3种提取方法对辣木籽原油和精炼油的色泽和透明度影响不大；3种提取方法中，水酶法辣木籽原油的酸值，其原油和精炼油的碘值、水分及挥发物含量均最大，氧化诱导时间最长，叶绿素和类胡萝卜素含量最低 ...
王标诗1,2, 杜京蔚1, 刘淑敏1,2, 张世奇1,2, 胡小军1,2, 彭元怀1,2, 江敏1,2, 张卫国1,2" WANG Biaoshi1,2, DU Jingwei1, LIU Shumin1,2, ZHANG Shiqi1,2, HU Xiaojun1,2, PENG Yuanhuai1,2, JIANG Min1,2, ZHANG Weiguo1,2"
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Integrative Conservation, Volume 5, Issue 2, Page 225-235, June 2026.This study used camera trap data from 6 years between 2016 and 2021 and generalized linear mixed models to explore the factors that influence the spatial density distribution of lynx and its prey populations in warm and cold seasons in Inner Mongolia Hanma National Nature Reserve, China.
Wentao Zhang +11 more
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Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT The development of lightweight, high‐attenuation, and broadband carbon‐based electromagnetic wave absorbers is hindered by the intrinsic trade‐off between impedance matching and dielectric dissipation. Herein, we report a facile and scalable synthesis of N‐doped lignin‐derived interconnected porous carbon (Nx‐LIPC) via hydrogen‐bond self ...
Bin‐Peng Zhang +7 more
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, 2011 本发明涉及木质素的加氢裂解，具体地说是一种钨基催化剂催化木质素加氢裂解制备芳香族化合物的方法；该方法所使用的催化剂以非零价钨为主要活性组分，以零价镍、钴、钌、铱、钯、铂、铁、铜等其中一种或几种少量过渡金属为第二金属组分。该方法以天然木质素、生物质水解残渣、木质素磺酸盐、碱木质素等为原料在120-450oC，氢气压力1-20MPa的水热条件下催化加氢，高选择性裂解为C6-C9的酚类化合物，酚产率最高达55.6%。与现有方法相比，本发明能使用可再生天然生物质为原料，原料廉价且来源广泛；无需使用无机酸、碱 ...
张涛, 郑明远, 李昌志, 王爱琴
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Zhongguo youzhi为探究木质素复合纳米粒子在Pickering乳液中的应用，以碱木质素为原料，采用水热法制备木质素复合纳米粒子，并以其作为稳定剂制备Pickering乳液。分析了木质素复合纳米粒子及其稳定的Pickering乳液的稳定性，并将该Pickering乳液用于包封姜黄素，研究模拟胃肠道环境下姜黄素的释放性能，并采用4种动力学模型模拟姜黄素的释放行为。结果表明：水热法制备的木质素复合纳米粒子平均粒径约为150 nm，PDI为0.1，在pH 3~9范围内保持稳定的分散状态，具备一定的pH响应能力 ...
覃善嘉1，殷亚庆1，吴晶枝1，刘幽燕1,2 QIN Shanjia1，YIN Yaqing1，WU Jingzhi1，LIU Youyan1,2
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT The development of novel oxygen electrocatalysts with cost‐effectiveness, scalability, high catalytic activity, and stability presents a significant challenge for zinc–air batteries (ZABs). The nitrogen‐rich lignin coordination network structure is synthesized through amine modification of lignin.
Ping‐Xian Feng +8 more
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Cost‐effective and efficient non‐noble‐metal catalysts for selective lignin hydrogenolysis remain elusive, representing a significant challenge in biorefinery. Here, we prepared a nitrogen‐doped carbon supported CoNi bimetallic catalyst, which was successfully derived from zeolitic imidazolate framework (ZIF) via high‐temperature pyrolysis ...
Xingwei Luo +3 more
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Gongye shui chuli, 2002 研究了 4株产酸白腐菌在碱性黑液体系中 pH值、固体量、酸析与酸溶木质素、COD的变化状况。结果表明碱性对产酸白腐菌具有抑制作用。S4B、S6B及S5B(pH =9)不能适应碱性环境,S1B和S5B(pH =8)能够适应-定的碱性环境,同时改变体系pH值、木质素和COD。S1B可将环境酸碱度从初始的 pH =8、pH =9下降到 pH =1,即通过产酸与生物降解,去除体系中木质素,COD去除率达 73%。说明产酸白腐菌在碱性黑液中可以发挥产酸与降解的双重功能 ...
王宏勋, 张晓昱, 陈建伟, 刘波
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People and Nature, Volume 8, Issue 1, Page 225-237, January 2026.Abstract Water‐related ecosystem services (WES) provided by urban rivers are influenced by complex interactions between social and ecological systems. Understanding the public perception of WES is crucial for sustainable planning and management of urban rivers in the future. Although studies on public perception on WES have been growing in recent years,
Qianzi Jiang +6 more
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