膜法SBR工艺对生活污水N、P降解的研究

研究了膜法SBR工艺在不同操作条件下对生活污水N、P的降解效果，当污泥浓度一定，水中DO达到3．5mg/L时，水质pH及无机C源是影响NH3－N降解的关键。当进水NH3－N浓度在50－105mg/L,COD浓度在120－260mg/L时，用Na2CO3调pH在8．0－8．4，运行工况为：进水－闲置段0．5h,曝气1．5h、沉降1h时，可使COD达标排放，NH3－N去除率在50－70％，且有最佳脱N效果。     

α化脱水方便米饭的研制

对a化脱水方便米饭的加工工艺进行了初步探讨。结果表明：籼米中添加5％的糯米，成品品质较好；大米浸泡时间，以水温为60℃左右，浸泡时间为40min为宜；大米蒸煮时，米与水的比例为1：1．2，蒸20min为最适条件；米饭离散过程中，添加2％的脂肪酸蔗糖酯效果明显。     

甘薯“冀审薯200001”钙镁硫吸收特性的研究

对“冀审薯200001”块根产量48900kg/hm^2水平下Ca,Mg,S吸收特性进行了研究。结果表明：每生产1000kg鲜薯，植株需吸收Ca4.63kg,Mg1.59kg,S0.78kg，其比例为1．00：0．34：0．17，栽秧后55－81d是植株吸收各种养分最多的时期，分别占植株最大累积吸收量的52．58％，65．51％，49．53％；收获时植株吸收的Ca、Mg、S主要贮存在茎叶中。     

超细碳酸钙的制备与表征

分别以硅酸钠和硫酸锌为晶型控制添加剂，通过石灰乳碳化工艺制备超细CaCO3粉体。研究了添加剂用量对CaCO3颗粒尺寸的影响，并用TEM，XRD和TG－DTA对CaCO3粉体进行了表征。结果表明，添加0．7％－1．5％硅酸钠和0．5％－1．2％硫酸锌可分别制得颗粒尺寸为40－50m和40－60nm的球形和立方形超细CaCO3粉体。     

冀东地区越冬菠菜钙镁硫的吸收特性

越冬菠菜(唐山大叶)新鲜茎叶产量在92544kg／hm^2水平下，平均每生产1000kg新鲜茎叶，植株需吸收Ca0．848kg，Mg0．561kg，S0．411kg，比例为1．00：0．66：0．48；3月2日～4月10日是植株吸收Ca，Mg，S的主要时期，分别占各自总吸收量的72．91％，62．74％，72．65％；收获时，植株吸收的Ca，Mg，S主要贮存在绿叶中。     

茶多糖提取新工艺

对茶叶多糖的提取新工艺进行了系统研究。结果表明，茶多糖提取的最优工艺为：原料经预处理，经0．20％的纤维素酶在40℃，pH5．0条件下水解4h，再用30倍样品质量的水在80℃，pH6．5条件下浸提3h，过滤，滤液经MWCO100000的超滤膜在50℃，0．4MPa下浓缩至原体积的1／3后用终浓度65％(体积分数)的乙醇沉淀，经脱蛋白干燥，得到茶多糖制品，产率为3．90g／100g(干重)。     

羊仔毛衫防毡缩整理优化工艺的探讨

羊毛衫采用双氧水酶两步法处理，可获得防毡缩性好，强力损伤小的效果，通过正交实验设计，得出最佳工艺条件为：双氧水的作用逍度60ml/1,温度60度，时间45min；酶HAP用量3．0％，温度50度，时间60min。经最佳工艺条件整理的毛衫可达到超级耐洗的水平。     

甘蓝汁饮料的研制

以甘蓝为原料。经打浆、调配、均质、脱气、灌装、杀菌研制出具有甘蓝风味和营养的蔬菜汁饮料。结果表明．采用pH值5．0—5．5左右90℃300ppm的乙酸铜溶液热烫2—3min的工艺护色效果最佳,饮料最佳配方为甘蓝汁原液质量浓度为75％、加糖量为9％、乳酸量为0．4％。加入0．15％复配胶（CMC—Na和明胶1：1混合）的甘蓝汁饮料稳定性最好。经热灌装二次杀菌制成成品饮料色泽鲜绿,不透明,汁液均匀一致,味道酸甜清新可口。     

趣味化学转盘

在讲《化学式的写法》时，我自制了一种非常简单的化学转盘，它能使课堂教学生动活泼，富有趣味性，增强了学生的学习乐趣．现介绍如下：一．化学转盘的构造1．化学转盘由一个大盘和两个小盘组合而成（大盘可用木板制做，小盘可用硬纸板制做）．再用图何将两个小盘分别固定在大盘的两面上（分A、B两面）．使小盘可以在大盘上转动，并在小盘上附加一指针（可随时取下）．2．A面（见图1）大盘上标有P＋5、Na＋1、Mg＋2、Fe＋3、H＋1、Cu＋2、C＋4、Al＋3八种常见的正价元素；小盘上标有O－'、CI－－'、S－'、F－'Z四种常见的负价元素，…     

初中化学上学期期中考试试卷

可能用到的原子量：N－14O－16H－1C－12Fe-56S－32Ca－40一、（每空0．5分，共9分）1．写出下列元素符号或元素名称：Si，溴，Mn，铝，Au，氖。2用化学符号表示下列意义：二个氮原子，三个五氧化二磷分子，一个氯气分子，二个水分子3.写出下列物质的名称：MgSO4，NH3，NSCl，CaO.4.配平下列化学方程式：二、按要求填表；（本题12分）三、填空题：（每空1分，共24分）1．有A、B两种元素．它们的原子结构示意图分别为元素的名称是A、B。当A的单质在B的单质中燃烧时。发出色火焰，同时生成（写名称）。该反应的化学方程式为生成物…     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

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?     

汉字倒说

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。     

只要努力,不要后悔

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.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

钱生钱!

我们绝大部分人都同意一件事情——我们喜欢金钱。但是你对金钱的喜欢之情足够到让你创立一份事业么?.财富通常被人忽视,主要在于人们不能真正了     

库克斯顿城堡

城堡, 是欧洲典型的建筑之一, 每个城堡都有一个美丽的传说或是一段历史。从本期开始, 我们将推出“城堡之旅”, 带各位读者去浏览、观赏欧洲各地的城堡, 开始一段文化与历史的旅途!     

Sister Carrie, an Adherent of Desires

Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.