The inheritance of protein content in the milk of dairy cows

Details are given of the protein and casein yields during the complete lactation of healthy cows maintained under conditions of reasonably uniform management at the experimental farms of the Institute of Animal Genetics.Methods of chemical analysis are stated in detail, with especial reference to the precipitation of the casein at its isoelectric point. The standard errors involved in the chemical work were determined experimentally and two methods for precipitating the casein were compared without finding a substantial difference.An examination is made of the effect of various 'environmental conditions on the secretion of protein. Age of the cow was found to have a definite effect on the amount of protein secreted; it was found to increase with age. Service period also affects the amount, the longer the S.P. the bigger the amount of protein. Cows calving in October and November give the highest yields and those calving in March and April give the lowest. A dry period preceding the lactation has no effect if it exceeds three weeks.Statistical methods used at present to investigate the problems of inheritance of the milk yield and its constituents are discussed in detail. The squared difference method is employed and certain difficulties in its application are noted, requiring an adjustment of one of the raw figures to compensate for the fact that one relationship group is unduly dominated by the progeny of a single bull.The results show that the amounts of protein and casein secreted during lactation are inherited. The effect of the sire was found to be equal to that of the dam in the transmission of the genes governing the inheritance of these two characters. The mean square difference between the yields of unrelated cows was greater than the mean square difference between the yields of any other relationship group. The mean square difference between the yields of dam and daughter was also found. Arising from this study certain correlations between the protein yield of related cows are included

The Effectiveness of Dietary-Induced Ketogenesis on Cognition in Older Adults: A Scoping Review of the Literature

There is growing interest in the effect of dietary interventions in people living with memory impairment and delaying cognitive decline. Investigation of alterations in glucose metabolism and dietary-induced ketogenesis in older adults is a recent growing area of research. Ketone bodies are an important alternative energy source in the brain and may be beneficial to people developing or who already have memory impairment or those with Alzheimer’s disease. This scoping review aims to evaluate the available evidence on dietary-induced ketogenesis and its effect on cognition in older adults and the factors affecting feasibility of the dietary interventions to inform the design of future studies. The scoping review methodology explored the current knowledge about dietary interventions related to dietary-induced ketogenesis and cognition in older adults and identify gaps in the literature. Eleven dietary intervention studies included in the review demonstrated that both medium-chain triglyceride supplementation and ketogenic diets induce ketosis. Nine of these studies demonstrated that dietary-induced ketogenesis could lead to an improvement in cognitive functions, but the evidence remains inconclusive. Most of the included studies showed evidence to suggest that dietary-induced ketogenesis improves cognitive functions in older adults. However, the number of published papers is small and there were differences in the design and types of the dietary interventions (medium-chain triglyceride supplementation, ketogenic diet) along with high drop-out rates in some studies which limits the generalization of the findings. Although methodologies used in the studies vary, the findings warrant the need for further research with larger sample sizes in people at different stages of cognitive impairment, and to develop strategies to improve adherence to the intervention

Performing el Rap el ʿArabi 2005-2015: Feeling Politics amid Neoliberal Incursions in Ramallah, Amman, and Beirut

This study is about politics in Arabic rap. Specifically, it is about affective dynamics and material negotiations during rap concerts in three cities in the Levant. I analyze Arab hip hop culture in the context of three different but related histories of cosmopolitan, middle class growth, and gentrification. Using an ethnomusicological framework rooted in participant observation and performance theory, I compare concert conditions, audience behavior, and accessibility of music production in Ramallah, Amman, and Beirut. In Chapter One, I elaborate the discursive and theoretical frameworks that have pinned the political valences of Arab youth, Arab artists, and Arab rappers in particular into representations of “resistance.” A confluence of energies I call “neoliberal orientalism” drives the recent, widespread attribution of “resistance” to Arab youth and cultural production, especially rap and hip hop in the aftermath of local protests over the past decade. As an alternative, in Chapter Two I propose tracing the emergence of what I call political feeling when the music is performed live. In this chapter, I argue that tarab can be built and does emerge in contemporary Arabic rap. Based on this proposal, I build an ethnographic model for analyzing this subcultural music production that is attentive to the holding in tension of political feelings as politics in process. This is one answer to the question: how can we talk about politics in cultural production without talking about resistance? Chapters Three, Four, and Five are case studies centered on concerts in Ramallah, occupied Palestine; Amman, Jordan; and Beirut, Lebanon, respectively. They apply the theoretical frameworks built in the first two chapters in each context. In all three cities, I locate the overwhelming majority of hip hop concerts within the provenance of increasingly cosmopolitan middle class culture. Tracking how neoliberal urban changes like gentrification affect concert venues and programming, I consider how material realities influence the choices that rappers and their fans make. This puts musicians and audiences in the material context of the political concerns they relate without assuming their work is “resistance” to them

The Effect of Guidance Booklet on Discharged Mothers of Children with Respiratory Tract Infection

Aim of the study to evaluate the effect of guidance booklet on discharged mothers of children with respiratory tract infection through: Identifying mothers' needs, developing guidance booklet of discharge according to mothers' needs and evaluating the effect of guidance booklet on the mothers. Design This study was a quasi experimental design. Setting This study was conducted in El- Menoufya University Hospital (Egypt) and El-Basher Hospital (Jordan) Sample Convenience sample of 80 mothers having children suffering from respiratory tract infection (40 mothers from each setting). Tools Data were collected through an interviewing questionnaire to assess socio-demographic data for mothers and their children, mothers' knowledge about respiratory disease, importance of nutrition and fluids. Mother’s practices by asking questions concerning hygienic measures and medications and practices through observation check-list based on modified Getting Ready for Discharge Checklist regarding, temperature measurement and tap compresses for their children. Results revealed that the statistical significant improvements (P<0.01) in mother’s knowledge and practices after giving the guidance booklet in both groups. There was improvement in hand washing procedure, nutritional importance, type of fluids given and importance of medication there was a statistically significant improvement after the guidance booklet of discharge instructions in both groups. Key Terms: guidance booklet of discharge, Respiratory infection, mother

The Effect of Guidance Booklet on Discharged Mothers of Children with Respiratory Tract Infection

Aim of the study to evaluate the effect of guidance booklet on discharged mothers of children with respiratory tract infection through: Identifying mothers' needs, developing guidance booklet of discharge according to mothers' needs and evaluating the effect of guidance booklet on the mothers. Design This study was a quasi experimental design. Setting This study was conducted in El- Menoufya University Hospital (Egypt) and El-Basher Hospital (Jordan) Sample Convenience sample of 80 mothers having children suffering from respiratory tract infection (40 mothers from each setting). Tools Data were collected through an interviewing questionnaire to assess socio-demographic data for mothers and their children, mothers' knowledge about respiratory disease, importance of nutrition and fluids. Mother’s practices by asking questions concerning hygienic measures and medications and practices through observation check-list based on modified Getting Ready for Discharge Checklist regarding, temperature measurement and tap compresses for their children. Results revealed that the statistical significant improvements (P<0.01) in mother’s knowledge and practices after giving the guidance booklet in both groups. There was improvement in hand washing procedure, nutritional importance, type of fluids given and importance of medication there was a statistically significant improvement after the guidance booklet of discharge instructions in both groups. Key Terms: guidance booklet of discharge, Respiratory infection, mother

Comparative Study of Sensorless Control Methods of PMSM Drives

Recently, permanent magnet synchronous motors (PMSMs) are increasingly used in high performance variable speed drives of many industrial applications. This is because the PMSM has many features, like high efficiency, compactness, high torque to inertia ratio, rapid dynamic response, simple modeling and control, and maintenance-free operation. In most applications, the presence of such a position sensor presents several disadvantages, such as reduced reliability, susceptibility to noise, additional cost and weight and increased complexity of the drive system. For these reasons, the development of alternative indirect methods for speed and position control becomes an important research topic. Many advantages of sensorless control such as reduced hardware complexity, low cost, reduced size, cable elimination, increased noise immunity, increased reliability and decreased maintenance. The key problem in sensorless vector control of ac drives is the accurate dynamic estimation of the stator flux vector over a wide speed range using only terminal variables (currents and voltages). The difficulty comprises state estimation at very low speeds where the fundamental excitation is low and the observer performance tends to be poor. The reasons are the observer sensitivity to model parameter variations, unmodeled nonlinearities and disturbances, limited accuracy of acquisition signals, drifts, and dc offsets. Poor speed estimation at low speed is attributed to data acquisition errors, voltage distortion due the PWM inverter and stator resistance drop which degrading the performance of sensorless drive. Moreover, the noises of system and measurements are considered other main problems. This paper presents a comprehensive study of the different methods of speed and position estimations for sensorless PMSM drives. A deep insight of the advantages and disadvantages of each method is investigated. Furthermore, the difficulties faced sensorless PMSM drives at low speeds as well as the reasons are highly demonstrated. Keywords: permanent magnet, synchronous motor, sensorless control, speed estimation, position estimation, parameter adaptation

Aspects of topology of condensates and knotted solitons in condensed matter systems

The knotted solitons introduced by Faddeev and Niemi is presently a subject of great interest in particle and mathematical physics. In this paper we give a condensed matter interpretation of the recent results of Faddeev and Niemi.Comment: v2: Added a reference to the paper E. Babaev, L.D. Faddeev and A.J. Niemi cond-mat/0106152 where an exact equivalence was shown between the two-condensate Ginzburg-Landau model and a version of Faddeev model. Miscelaneous links related to knotted solitons are available at the author homepage at http://www.teorfys.uu.se/PEOPLE/egor/ . Animations of knotted solitons by Hietarinta and Salo are available at http://users.utu.fi/h/hietarin/knots/c45_p2.mp

Adverse drug events associated with vitamin K antagonists: factors of therapeutic imbalance

Nancy El-Helou, Amal Al-Hajje, Rola Ajrouche, Sanaa Awada, Samar Rachidi, Salam Zein, Pascale SalamehClinical and Epidemiological Research Laboratory, Faculty of Pharmacy, Lebanese University, Beirut, LebanonBackground: Adverse drug events (ADE) occur frequently during treatment with vitamin K antagonists (AVK) and contribute to increase hemorrhagic risks.Methods: A retrospective study was conducted over a period of 2 years. Patients treated with AVK and admitted to the emergency room of a tertiary care hospital in Beirut were included. The aim of the study was to identify ADE characterized by a high international normalized ratio (INR) and to determine the predictive factors responsible for these events. Statistical analysis was performed with the SPSS statistical package.Results: We included 148 patients. Sixty-seven patients (47.3%) with an INR above the therapeutic range were identified as cases. The control group consisted of 81 patients (54.7%) with an INR within the therapeutic range. Hemorrhagic complications were observed in 53.7% of cases versus 6.2% of controls (P < 0.0001). No significant difference was noticed between cases and controls regarding the indication and the dose of AVK. Patients aged over 75 years were more likely to present an INR above the therapeutic range (58.2%, P = 0.049). Recent infection was present in 40.3% of cases versus 6.2% of controls (P < 0.0001) and hypoalbuminemia in 37.3% of cases versus 6.1% of controls (P < 0.0001). Treatment with antibiotics, amiodarone, and anti-inflammatory drugs were also factors of imbalance (P < 0.0001).Conclusion: Many factors may be associated with ADE related to AVK. Monitoring of INR and its stabilization in the therapeutic range are important for preventing these events.Keywords: adverse drug events, vitamin K antagonists, bleeding risks, therapeutic imbalanc

Effect of Nickel Content on the Corrosion Resistance of Iron-Nickel Alloys in Concentrated Hydrochloric Acid Pickling Solutions

The effect of Ni content on the resistance against corrosion of Fe-36% Ni and Fe-45% Ni alloys in 1 M hydrochloric acid pickling solution was reported. Various electrochemical and spectroscopic techniques such as potentiodynamic cyclic polarization (CPP), open-circuit potential (OCP), electrochemical impedance spectroscopy (EIS), potentiostatic current-time (PCT), and scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS) have been employed. CPP measurements indicated that the corrosion current and corrosion rate recorded lower values for the alloy that had higher nickel content. OCP curves proved that the presence of high Ni content shifts the absolute potential to the positive potential direction. EIS results revealed that the surface and polarization resistances were much higher for the alloy with higher Ni content. PCT curves also showed that the absolute currents were lower for Fe-45% Ni alloy. All results were in good agreement with others and confirmed clearly that the corrosion resistance in HCl solutions for Fe-45% Ni alloy was higher than that obtained for Fe-45% Ni alloy

Mechanical and flow behaviours and their interactions in coalbed geosequestration of CO2

Studying gas transport mechanisms in coal seams is crucial in determining the suitability of coal formations for geosequestration and/or CO-enhanced coal bed methane recovery (ECBM), estimating CO storage capacity and recoverable volume of methane, and predicting the long-term integrity of CO storage and possible leakages. Due to the dual porosity nature of coal, CO transport is a combination of viscous flow and Fickian diffusion. Moreover, CO is adsorbed by the coal which leads to coal swelling which can change the porous structure of coal and consequently affects the gas flow properties of coal, i.e. its permeability. In addition, during CO permeation, the coal seam undergoes a change in effective stress due to the pore pressure alteration and this can also change the permeability of the coal seam. In addition, depending on the in situ conditions of the coal seam and the plan of the injection scheme, carbon dioxide can be in a supercritical condition which increases the complexity of the problem. We provide an overview of the recent studies on porous structure of coal, CO adsorption onto coal, mechanisms of CO transport in coalbeds and their measurement, and hydro-mechanical response of coal to CO injection and identify opportunities for future research