1,229 research outputs found

    Use of Stockpiled Berseem Clover as a Supplement for Grazed Corn Crop Residues

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    In the fall of 1994, mature Charolais cross cows in midgestation were allotted to duplicate 15 acre fields containing corn crop residues or a 2-to-1 mixture of corn crop residues and berseem clover planted in 3 strips at an allowance of 2.5 acres/cow for a 140 day wintering season. Similar cows were allotted duplicate drylots. All cows were fed hay as necessary to maintain a body condition score of 5. Cows grazing corn crop residues with or without berseem clover required 2596 pounds less hay per cow than cows maintained in a drylot. There was no difference in the amounts of hay required by cows grazing corn crop residues alone or with berseem clover. Initial organic matter yield of berseem clover was nearly that of corn crop residues and did not decrease as rapidly as corn crop residues. Berseem clover had a higher organic matter digestibility than corn crop residues at the initiation of grazing. Organic matter digestibility of berseem clover, however, decreased more rapidly than corn crop residues because of weathering during the winter

    Some economic and socio-cultural factors associated with cerebral malaria among under-fives in Benin City, Nigeria.

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    Introduction: Risk factors associated with the occurrence of cerebral malaria in under fives are well documented. Outside these acknowledged factors of age, location, and nutrition, other socioeconomic/cultural factors could contribute to the maze of factors determining the occurrence of the morbidity. Methods: To unravel such factors a key informant interview was conducted among resident doctors in paediatrics at the University of Benin Teaching Hospital. Factors identified formed the basis of this cross-sectional, case control study involving 64 cases each of subjects and controls with uncomplicated malaria carried out at the Hospital. Such factors as delay in accessing competent intervention, prolonged use of anti-pyretics, material educational status, use of substandard medication and abdominal scarification as identified were evaluated in the two sets of patients. Others evaluated included mothers’ occupation and health seeking behaviours. Results: Factors found to be significantly associated with occurrence of cerebral malaria were initial treatment in clinics (X2 = 6.43, p = 0.011) presence of fresh abdominal scarification (X2 = 4.30, p=0.038) late presentation (X2 = 32.64; p=0.000) and non- use of mosquito nets (X2 = 9.14; p=0.002). Conclusion/Recommendations: Initial treatment either in clinics or non orthodox facilities contributed significantly to the occurrence of cerebral malaria. The implication of these is that pre- teaching hospital treatments were inadequate in managing the child meant to develop cerebral malaria. Attention should therefore be directed at these areas alongside use of mosquito nets if the objective is to minimise the occurrence of cerebral malaria.Key words: Cerebral malaria, Risk factors, Under fives, Economic factors & Socio-cultural factors

    Approximation Algorithms for Connected Maximum Cut and Related Problems

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    An instance of the Connected Maximum Cut problem consists of an undirected graph G = (V, E) and the goal is to find a subset of vertices S \subseteq V that maximizes the number of edges in the cut \delta(S) such that the induced graph G[S] is connected. We present the first non-trivial \Omega(1/log n) approximation algorithm for the connected maximum cut problem in general graphs using novel techniques. We then extend our algorithm to an edge weighted case and obtain a poly-logarithmic approximation algorithm. Interestingly, in stark contrast to the classical max-cut problem, we show that the connected maximum cut problem remains NP-hard even on unweighted, planar graphs. On the positive side, we obtain a polynomial time approximation scheme for the connected maximum cut problem on planar graphs and more generally on graphs with bounded genus.Comment: 17 pages, Conference version to appear in ESA 201

    Relative Cost-effectiveness Of Using An Extensively Hydrolyzed Casein Formula In Managing Infants With Cow’s Milk Allergy In Brazil

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    To estimate the cost-effectiveness of three alternative dietetic strategies for cow’s milk allergy in Brazil: 1) using an extensively hydrolyzed casein formula (eHCF; Nutramigen) as a first-line formula, but switching to an amino acid formula (AAF) if infants remain symptomatic; 2) using an AAF as a first-line formula and then switching to an eHCF after 4 weeks once infants are symptom-free, but switching back to an AAF if infants become symptomatic; and 3) using an AAF as a first-line formula and keeping all infants on that formula. The analysis was conducted from the perspective of the Brazilian public health care system, Sistema Único de Saude. Methods: Decision modeling was used to estimate the probability of immunoglobulin E (IgE)-mediated and non-IgE-mediated allergic infants developing tolerance to cow’s milk by 12 months from starting a formula. The models also estimated the Sistema Único de Saude cost (at 2013/2014 prices) of managing infants over 12 months after starting a formula, as well as the relative cost-effectiveness of each of the dietetic strategies. Results: The probability of developing tolerance to cow’s milk by 12 months from starting a formula was higher among infants with either IgE-mediated or non-IgE-mediated allergy who were initially fed with an eHCF, compared with those who were initially fed with an AAF. The total health care cost of initially feeding an eHCF to cow’s milk allergic infants was less than that of initially feeding both IgE-mediated and non-IgE-mediated infants with an AAF. Conclusion: Within the study’s limitations, using an eHCF instead of an AAF for the first-line management of newly-diagnosed infants with cow’s milk allergy affords a cost-effective use of publicly funded resources, since it improves the outcome for less cost. © 2016 Guest et al.862963
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