Method and apparatus for battery charge control Patent

Battery charging system with cell to cell voltage balanc

Circuit prevents overcharging of secondary cell batteries

Circuit prevents battery cell overcharging by detecting and reducing the charging voltage to the open-circuit voltage of the battery when this current falls to a predetermined value. The voltage control depends on the fact that the charging current falls significantly when the battery nears its fully charged state

Design, fabrication, and initial test of a fixture for reducing the natural frequency of the Mod-O wind turbine tower

It was desired to observe the behavior of a two bladed wind turbine where the tower first bending natural frequency is less than twice the rotor speed. The system then passes through resonance when accelerating to operating speed. The frequency of the original Mod-O tower was reduced by placing it on a spring fixture. The fixture is adjustable to provide a range of tower bending frequencies. Fixture design details are given and behavior during initial operation is described

An Investigation of the Effect of Normative Systems on an Empirical Variable

This investigation is concerned, with the problem of the normative constraints upon scientific research within the broad theoretical framework of the sociology of knowledge, i.e., the contention that knowledge is functionally related to the social system. The concepts "knowledge" and "Social system" are open to wide interpretation; however, in this study knowledge refers to an empirically verifiable variable and the social system is synonomous with the normative system

Effects of Soil Injection of Liquid Dairy Manure on the Quality of Surface Runoff

Liquid dairy manure has been injected on the soil contour to depths of 6 and 12 inches and applied to the surface of a Bluegrass sod and a bare tilled soil. Application rates of 9,250 gallons per acre were used. Runoff from 9-foot-square plots which were sprinkled at rates of 2.5 inches per hour on sod and 1.5 inches per hour on bare soil was collected and analyzed for various pollution parameters including COD, N, TS, TSS, pH, DO, and Fecal Coliform. The effects of pollutant yield in the runoff have been determined for various treatments. Injection of the manure into the soil essentially eliminated any pollutant yield in the runoff from the test plots as compared with surface application. Also, injection tended to even the rate of pollutant loss in the runoff. Increasing the delay-time between application of liquid manure and the simulated rainfall event significantly decreased the yield of pollutants in the runoff. Repeated yearly applications of manure on sod reduced pollutant concentration in runoff and also reduced runoff rates. Test results indicate that pollutant concentration in runoff is a function of the concentration in the liquid manure and the total quantity of runoff

Performance Differences in High Intensity Training Participants

High intensity training has become increasingly popular over the last 20 years with the advent of well-known training regimens such as P90X, CrossFit, Beachbody, PiYo, and Camp Gladiator. As such, it is important to understand the differences among individuals who participate in high intensity training. PURPOSE: The purpose of this research was to examine differences in Functional Movement Screen (FMS) scores, strength, power, and dynamic exercise in a cohort of male and female high intensity trained athletes (HIT). METHODS: A total of thirty participants (males, n=15; and females, n=15) (mean ± SD; age = 30.7 ± 9.9 years) with minimum two-years of HIT experience were recruited to participate in this study. On the first day of data collection each subject provided informed consent and then participated in a height and weight measurement, body composition measurement (7-site skinfold), FMS screening, and 1-Repetition Maximal (1-RM) lifts for deadlift (DL), shoulder press (SP), and power clean (PC). A minimum of 5 days later each subject performed a standardized test of dynamic exercise (DE) that involved performing as many repetitions as possible of 5 pullups, 10 pushups, and 15 unloaded squats in 20 minutes. Mann-Whitney U tests were performed to compare differences between the males and females for FMS scores and ANOVA was used to determine differences between the males and females for all other variables with p £ 0.05 for all analysis. RESULTS: Results of the Mann-Whitney tests comparing FMS scores between males and females indicated that the females had higher straight leg raise (SLR) scores (2.9 vs. 2.1, p= 0.001) and sum of all scores (FMSSUM) (16.9 vs. 15.4, p = 0.045) than the males. Results of the ANOVA indicated that the males demonstrated greater muscular strength per kilogram of body weight on the DL (1.99 vs. 1.65 kg/kgBW, p = 0.007) and the SP (0.833 vs. 0.513 kg/kgBW, p \u3c 0.001) exercises. Results of the ANOVA also indicated that the males demonstrated greater muscular power per kilogram of body weight on the PC (1.146 vs. 0.766, p \u3c 0.001) exercise. There was no statistically significant difference between groups for DE. CONCLUSION: The findings of this study support the need for a greater emphasis on mobility training, specifically the hips, for males that participate in high intensity training. Performance differences were shown between the genders for maximal muscular strength and power but not for dynamic exercise. These results indicate that these differences should be considered when designing training programs for maximal muscular strength and power training but same sport athletes of different gender could participate in the same dynamic exercise programming

Government review of the Mod-2 wind turbine (as-built)

The findings and recommendations of the Government committee formed to conduct an as-built review of the three Mod-2 wind turbine units at Goldendale, Washington are given. The purpose of the review was to identify any critical deficiencies in machine components that could result in failure, and to recommend any necessary corrective action before resuming safe machine operation. The review concluded that one of the deficiencies identified would preclude planned attended or unattended operation, provided that certain corrective actions were implemented

Landslides on Ceres: Diversity and Geologic Context.

Landslides are among the most widespread geologic features on Ceres. Using data from Dawn's Framing Camera, landslides were previously classified based upon geomorphologic characteristics into one of three archetypal categories, Type 1(T1), Type 2 (T2), and Type 3 (T3). Due to their geologic context, variation in age, and physical characteristics, most landslides on Ceres are, however, intermediate in their morphology and physical properties between the archetypes of each landslide class. Here we describe the varied morphology of individual intermediate landslides, identify geologic controls that contribute to this variation, and provide first-order quantification of the physical properties of the continuum of Ceres's surface flows. These intermediate flows appear in varied settings and show a range of characteristics, including those found at contacts between craters, those having multiple trunks or lobes; showing characteristics of both T2 and T3 landslides; material slumping on crater rims; very small, ejecta-like flows; and those appearing inside of catenae. We suggest that while their morphologies can vary, the distribution and mechanical properties of intermediate landslides do not differ significantly from that of archetypal landslides, confirming a link between landslides and subsurface ice. We also find that most intermediate landslides are similar to Type 2 landslides and formed by shallow failure. Clusters of these features suggest ice enhancement near Juling, Kupalo and Urvara craters. Since the majority of Ceres's landslides fall in the intermediate landslide category, placing their attributes in context contributes to a better understanding of Ceres's shallow subsurface and the nature of ground ice