Tuning gastropod locomotion: Modeling the influence of mucus rheology on the cost of crawling

Common gastropods such as snails crawl on a solid substrate by propagating muscular waves of shear stress on a viscoelastic mucus. Producing the mucus accounts for the largest component in the gastropod's energy budget, more than twenty times the amount of mechanical work used in crawling. Using a simple mechanical model, we show that the shear-thinning properties of the mucus favor a decrease in the amount of mucus necessary for crawling, thereby decreasing the overall energetic cost of locomotion.Comment: Corrected typo

Analysis of electromagnetic interference from power system processing and transmission components for Space Station Freedom

The goal of this research project was to analyze the potential effects of electromagnetic interference (EMI) originating from power system processing and transmission components for Space Station Freedom. The approach consists of four steps: (1) developing analytical tools (models and computer programs); (2) conducting parameterization (what if?) studies; (3) predicting the global space station EMI environment; and (4) providing a basis for modification of EMI standards

Efek Penambahan Belimbing Wuluh (Averrhoa Bilimbi L.) dalam Ransum terhadap Performan, Karkas dan Income Over Feed Cost Ayam Kampung

Starfruit (Averrhoa bilimbi L.) can serve as an acidifier which can improve digestive enzymes work, suppress the growth of pathogenic microbes, protecting feed from microbial and fungal attack and to improve the palatability of feed. The main objective of this study was to determine the effect of starfruit in the ration on the performance (feed intake, body weight gain, feed conversion), the weight of carcass parts, fatty meats, and income over feed cost. The study used 80 chicks two weeks old village with a complete randomized block design experiment method. The treatment consisted of control diet (P0), and three levels of addition of starfruit (P1 = 0.5%; P2 = 1%; and P3 = 1.5%). Each treatment was repeated 5 times. Rations and water were given adlibitum. The trial period lasts for 30 days. Test performed to determine differences in Duncan.The results showed the addition of up to 5% starfruit into the ration does not affect the performance of chicken and chicken carcass weight parts. The highest value of income over feed cost was achieved by treatment with the addition of 0.5% ration starfruit juice

Quaternary faulting in the New Madrid seismic zone in southernmost Illinois

U.S. Geological Survey, Department of the Interior, National Earthquake Hazards Reduction Program Award No. 1434-95-G-2525Ope

Functional Characteristics of the Gut Microbiome in C57BL/6 Mice Differentially Susceptible to Plasmodium yoelii

C57BL/6 mice are widely used for in vivo studies of immune function and metabolism in mammals. In a previous study, it was observed that when C57BL/6 mice purchased from different vendors were infected with Plasmodium yoelii, a causative agent of murine malaria, they exhibited both differential immune responses and significantly different parasite burdens: these patterns were reproducible when gut contents were transplanted into gnotobiotic mice. To gain insight into the mechanism of resistance, we removed whole ceca from mice purchased from two vendors, Taconic Biosciences (low parasitemia) and Charles River Laboratories (high parasitemia), to determine the combined host and microflora metabolome and metatranscriptome. With the exception of two Charles River samples, we observed 90% similarity in overall bacterial gene expression within vendors and 80% similarity between vendors. In total 33 bacterial genes were differentially expressed in Charles River mice (p-value \u3c 0.05) relative to the mice purchased from Taconic. Included among these, fliC, ureABC, and six members of the nuo gene family were overrepresented in microbiomes susceptible to more severe malaria. Moreover, 38 mouse genes were differentially expressed in these purported genetically identical mice. Differentially expressed genes included basigin, a cell surface receptor required for P. falciparum invasion of red blood cells. Differences in metabolite pools were detected, though their relevance to malaria infection, microbial community activity, or host response is not yet understood. Our data have provided new targets that may connect gut microbial activity to malaria resistance and susceptibility phenotypes in the C57BL/6 model organism

Kajian Tatanan Massa dan Desain Bangunan Hotel Padma Bandung

Hotel is a commercial buildings and is an investment that is growing in Bandung. The concept of sustainable hotel building can be applied to the design of buildings and building operations. Padma Hotel is a hotel that respect the environment and use natural resources into the building design. Study of Padma Hotel aims to analyze the order of the mass of the building, building design, and the utilization of natural resources. The method used is descriptive that concluded that the order of the mass of the building, building design, and utilization of natural resources impact to create a sustainable building design. Padma Hotel Bandung has already implemented most aspects of the ecology but social and economic aspects have not been entirely fulfilled