共查询到20条相似文献，搜索用时 62 毫秒
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对生物酶提取黄姜皂素的清洁生产工艺中酶的用量、提取温度、提取pH值、提取溶剂的选择等方面进行了研究,得出了黄姜皂素提取的最佳工艺条件,提高了皂素收率,并对黄姜皂素生产中产生的废水废渣进行综合利用,节约了资源,保护了环境。 相似文献
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水洗淀粉法在黄姜皂素生产中的应用 总被引：1，自引：0，他引：1
传统皂素生产工艺在皂素生产过程中,不仅造成了优质淀粉资源的巨大浪费,而且造成了环境污染及其所带来的高昂的污染治理费用.采用水洗淀粉法,从皂素生产的源头把淀粉从黄姜中分离出来,淀粉回收率约为46.3%;皂素收率提高1.1%,且降低了皂素废水的处理难度,末端废水COD从原来的33 615 mg/L降为12 285mg/L.该工艺简单、投资少. 相似文献
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AB法处理黄姜-皂素生产废水的研究 总被引：2，自引：0，他引：2
针对黄姜生产皂素废水的特性,对AB法工艺处理黄姜生产皂素废水的反应机理进行研究,确定了AB工艺处理黄姜皂素生产废水的工艺路线及技术参数. 相似文献
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倪文斌 《襄樊职业技术学院学报》2005,4(4):1-2,97
皂素废水具有浓度高、色度大、酸度大、治理难度大的特点。末端治理方案。运行成本高、治理费用大、一旦实施将造成巨大浪费。因此，皂素废水治理必须走综合利用的道路。 相似文献
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设计了一种用于薯芋皂甙水解物提取的溶剂型真空过滤干燥装置,该装置能极大地改善工作环境,提高溶剂油的使用效率简化工艺流程。而且,它不仅适用于薯芋皂素的过滤干燥,还适用于颗粒较细的物料有效成分的过滤和干燥。 相似文献
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吴克峰 《中国远程教育(综合版)》1995,(5)
一位电大生的足迹──记黄石皂素厂厂长、党委书记牛南纲吴克峰我的成功，不仅仅归于电大，但读电大，却是我迈向成功的第一步。一位企业家如是说人的一生总有一些值得难忘的日子，今年已进入不惑之年的黄石皂素厂厂长、党委书记牛南纲，人生经历的用风雨雨真是太多了，然... 相似文献
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将黄姜根茎浸泡后带水捣磨碎,适当条件下先用淀粉酶水解淀粉,再结合酸水解,石灰乳中和,以滤渣提皂素,可有效提高皂素收率,缩短生产周期． 相似文献
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罗艳萍 《读与写:教育教学刊》2008,5(6)
The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity. 相似文献
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Richard Denner 《海外英语》2007,(4):14-15
Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose. 相似文献
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Given a graph G,a subgraph C is called a clique of G if C is a complete subgraph of G maximal under inclusion and |C|≥2. A clique-transversal set S of G is a set of vertices of G such that S meets all cliques of G. The clique-transversal number, denoted as TC (G), is the minimum cardinality of a clique-transversal set in G. The clique-graph of G, denoted as K (G), is the graph obtained by taking the cliques of G as vertices, and two vertices are adjacent if and only if the corresponding cliques in G have nonempty intersection. Let F be a class of graphs G such that F={G|K(G) is a tree}. In this paper the graphs in F having independent clique-transversal sets are shown and thus TC (G)/|G|≤1/2 for all G ∈ F. 相似文献
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《海外英语》2007,(5):10-11
Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help? 相似文献
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陈美曦 《山东教育学院学报》2008,23(2):103-107
Different nations have different social cultures, and the social culture of every nation is developing with the development of the nation, language is greatly influenced by social culture, which enables language to possess national and historical characteristics. Word is the smallest, independent, meaningful linguistic unit of language. It can well reflect the national and historical characteristics. From synchronic aspect, the social and cultural influence on word meaning is mainly embodied in conceptual and associative meanings of word. The incorrespondence of word meaning is a phenomenon that exists in both conceptual and associative meanings of word among different languages. From diachronic aspect, the development of social culture causes some changes of word meaning to some extent. Therefore, social culture plays a key role in vocabulary learning and mastery of a language. 相似文献
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邱崇丙 《唐山师范学院学报》2014,(1):21-23
汉字的六书,《说文》对“转注”一类,语焉不详。后世学者提及转注,也仅限于许慎所举出的例字。《汉字例说》一文,作者从转注的角度综合考虑,对部分现代常用字作了分析,跟传统的解释有所不同。希望能抛砖引玉,互相切磋,以推进学术研究。 相似文献
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《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love. 相似文献