MC12——和兰博基尼赛跑的贵族战机

在世界顶级跑车中你很难忽略掉这么一个名字，玛萨拉蒂。玛莎拉蒂汽车公司是专门生产运动车的公司，在欧洲具有很高的知名度。     

Effect of Reaction Conditions on Hydrolysis of Chitin by Serratia marcescens QMB 1466 chitinase

The hydrolysis of chitin by Serratia marcescens chitinase was studied as part of ar overall project to develop a chitin waste treatment bioconversion scheme. Hydrolyses were conducted with automatic pH control in stirred flasks. Parameters varied were temperature, enzyme activity, and chitin particle size and concentration. A temperature of 30°C is suitable. Hydrolysis increases with increasing enzyme activity and chitin slurry concentration, and with decreasing particle size.     

SENSORY AND INSTRUMENTAL TEXTURE ANALYSIS OF CASSAVA (MANIHOT ESCULENTA, CRANTZ) ROOTS

Two cassava varieties, at three harvesting ages, 6, 12 and 24 months, were analyzed for sensory flavor and texture development. Maximum shear force, Texture Profile Analysis (TPA) and water absorption during cooking were determined at various sampling times. Changes during cooking were described by pseudo‐zero order models for water absorption, flavor and texture development for the fast cooking samples. The 24‐month‐old roots had higher variability and never reached optimum texture or flavor development. Significant pseudo first order models could represent hardness, cohesiveness and chewiness of the TPA, while springiness and adhesiveness varied in a non‐linear fashion. Maximum shear force was 111 N for raw samples and 8.1 N for samples that cooked in less than 25 min. Samples that required longer cook time had on the average a maximum shear force of 19 N.     

Decision Support for DCs Location and Distribute Range Planning: Case Study in Asia-Pacific Region

A major concern is to locate manufacturing plants and/or distribution centers to serve the needs of consumers widely and rapidly with reasonably distributive cost and flexible delivery time. The purpose of this research is to help enhance a decision support for three distribution center locations with different ranges of area in order that the distributors are able to serve appropriately the retailers in twelve large cities or capitals of the nine countries in Asia-Pacific region. The researcher applies the theory of supply chain and logistics management systems with Excel, Visual Basic and Genetic Algorithms programs to find the research results. The research results revealed that the interfaces of Excel, Visual Basic, and Genetic Algorithms programs helped decision support in distribution range selection for 3 distribution center locations. Each of which had different ranges of area for distribution with a rapidly, flexibly distributed time. However, variables resulting in a decision-making should be adjusted under certain circumstances for more reliable, specific needs.     

Evaluation of the Fatigue Characteristics of Laser-processed Hot Work Tool Steel Based on Reliability

It is reported that laser-processing is effective to repair the heat checks, which are fine shallow cracks on a surfaceof die-casting dies.     

平滑演进到DOCSIS 3.1—— 运营的考量

本文首先回顾了DOCSIS 3.1规范中的若干独特要求,随后讨论了多种向DOCSIS 3.1演进的路径,以帮助运营商的网络能够适应新标准且最大限度地减少业务中断.还介绍了向DOCSIS 3.1迁移的一些技巧,包括网络容量受限的应对措施、新设备的采购策略、超级用户与普通用户的区别对待、DOCSIS 3.1迁移与视频业务IP转化的同步执行、网络带宽的平滑升级等内容.     

Water‐use efficiency in grapevine cultivars grown under controlled conditions: effects of water stress at the leaf and whole‐plant level

Background and Aims: Improving water‐use efficiency (WUE) is desirable for future grapevine growth and grape production, especially in Mediterranean areas where water is predicted to be limiting. Understanding the genetic variability in WUE is important to identify the most appropriate cultivars to be used in semi‐arid areas. Most previous studies have focused at leaf‐level WUE, while information on whole‐plant level is scarce. This study explored the genetic variability of grapevine in whole‐plant WUE (WUE_WP) to determine whether several leaf WUE (WUE_l) indicators are suitable as proxies of WUE_WP. Methods and Results: Three similar experiments were performed to compare WUE in up to eight different grapevine cultivars under irrigation and water‐stress treatments. Although WUE_l and WUE_WP varied with cultivar and treatment, WUE_l was not a reliable parameter to predict WUE_WP. Conclusions: Large variability in WUE_WP between grapevine cultivars was observed, although this variability was not described by leaf‐level indicators of WUE. Significance of the Study: This study showed that the large variability existing for WUE_WP in different cultivars offers an potential method for selecting the more suitable cultivars to grow in water‐scarce viticulture areas, although WUE_l is not reliable for estimating WUE_WP.     

DNA ANALYSIS FOR IDENTIFICATION OF FOOD-ASSOCIATED FOREIGN SUBSTANCES

To identify food‐associated foreign substances, a DNA analysis consisting of 18S rDNA sequencing and homology search analysis has been developed. In this method, we designed universal primer pairs for specific amplification of animal and plant 18S rDNA and constructed an original DNA database storing partial 18S rDNA sequences of 222 organisms commonly used for culinary purposes. In the model experiments, food materials were successfully identified, indicating that our DNA analysis method can be practically applied to the identification of food‐associated foreign substances. It is also expected that this method complements conventional morphological and compositional analysis, leading to more accurate and reliable identification of food‐associated foreign substances.     

Bound Water Associated with 7S and 11S Soy Proteins Determined by Vapor Sorption Isotherms and Pulsed NMR

Bound water associated with freeze-dried 7S and 11S proteins was characterized by applying both sorption isotherm and proton pulsed NMR techniques. Over the a_w range 0.10 to 0.97, the water binding capacity of the 7S protein was superior to that of the US protein. There was no significant difference in sorption capacity between unhealed and heated proteins. The isotherms showed a biphasic linear relation so that two states of bound water, namely polymer and capillary water, were distinguished. NMR data followed isotherm data. The NMR mobility of the polymer water was less than that of the capillary water, as expected. However, high mobility was not related to high moisture content in the capillary water region.