花期线辣椒适宜土壤水分上下限指标研究

在盆栽条件下,应用二次回归正交旋转组合试验设计研究了线辣椒开花期适宜的土壤水分下限及灌水上限,并进行了大田经济收入仿真预测。结果表明:灌水上限与土壤水分下限对线辣椒产量有明显的正效应和交互效应,土壤水分下限主效应为灌水上限主效应的2.76倍;线辣椒灌水上限与土壤水分下限效应函数为一报酬递减函数,根据这个效应函数,理论上线辣椒获得最大产量的适宜灌水上限为相当于田间持水量的83.4%,土壤水分下限为相当于田间持水量的55.4%,预测大田条件下产量5585.85 kg/hm2,收入9821.85元/hm2。     

楔横轧空心件加工界限理论分析

推导了楔横轧工艺成形空心阶梯轴类件时压扁失稳条件 ,结合楔横轧空心件旋转条件和轧件表面缺陷形成条件制定了楔横轧空心阶梯轴类件的加工界限图 ,并将研究结果应用于拖拉机转向调节器楔横轧成形工艺中 ,取得了较好的效果。     

冷库集中与分散供冷系统经济性的建模分析

制冷系统作为食品企业的能耗大户，其经济性将严重影响企业的运行成本。而不同设计的制冷系统，又决定了冷库的总投资成本不同。为此，建立了基于寿命期内，平均单位冷量总成本指标的冷库集中供冷与分散供冷系统的经济分析模型；通过建立冷库数学模型与计算机仿真分析运行成本，并结合实例对集中供冷与分散供冷系统进行了经济性分析。     

Analysis and Applicati on High- Efficacy Saving Energy Technique of Central Air - Conditioning System

Aimins at the state that present central air- conditioning systems performance in high ineffective energy consumption, this paper studies the reasons of ineffective energy consumption and the key technique to solove the problem. A set of energe saving device for central air - conditioning systems is developed. A system dynamical mathematical model is established in theory, and an optimal performance pattern is fired. The central air - conditioning system can work in the optimal pattern with effective comfortability and saving energy by using. The device may save power rate to 22.6% by survey and may have broad market prospect in the southern area.     

氟喹诺酮类药物残留限量及检测技术研究进展

氟喹诺酮类药物(FQS)是第3代喹诺酮类抗生素,具有良好的生物利用度和耐受性,不仅对革兰氏阳性菌和阴性菌有杀菌作用,还具有抗真菌和抗病毒活性,因此被广泛应用于治疗畜牧动物养殖过程中的细菌性感染。但当人类过多食用含有FQS残留的食品后,将会损害身体多个系统并引起细菌耐药性,因此建立灵敏度高、简便的检测方法十分必要。本文综述了FQS残留的检测标准和常用的检测方法及优缺点,酶联免疫分析法(ELISA)具有灵敏度高、操作简便等优势,预测ELISA法在今后FQS残留检测中发挥重要作用。     

The Analysis of operation Management Model and Economic Dvnamic Reasons for Disposition of Regional Flammable Harmful Wastes

Having analysed present situation of disposition of flarnmable harmful wastes inthe city of chongqing,commercial operation management medel in which waste recovery companiesare suggested as the media to dispose wastes is presented with the technique of central in cineration.Both economic dvnamic reasons and related conditions of this regional diqpcoition of flam mablehar m ful wastes are reviewed in detail.     

A METHANE ALARM AND POWER-OFF CONTROL DEVICE CONTROLLED BY ASINGLE-CHIP MICROCOMPUTER

This paper presents the structure and main function of a methanealarm and power-off control device controlled by a single-chip microcomputer,which is first used in China.This paper mainly discusses the circuitry and work-ing principle of a computer and how to solve some special problems when the single chip microcomputer is used in a coal mine where methane exists.