In the present work, a new electrothermal combined stress test cell has been designed and fabricated to conduct accelerated electrothermal ageing. The fabricated test cell includes all possible real working conditions of the transformers. The effects of accelerated electrothermal ageing on the performance of power transformers with thermally upgraded Kraft (TUK), Nomex-910 and Nomex-410 solid dielectrics in conjunction with mineral oil have been investigated. The accelerated electrothermal ageing has been performed for a temperature range of 100°C to 220°C, along with 10 kV electrical stress. Subsequently, several electrical, thermal, mechanical and chemical properties of transformer oil and different paper dielectrics have been determined. It has been observed from the diagnostic test results that Nomex impregnated mineral oil samples have better electrothermal performance as well as oxidation stability when compared to the thermally upgraded Kraft oil samples. Therefore, Nomex insulating materials in conjunction with mineral oil are suggested as alternative solid dielectrics for power transformers in order to achieve better oxidation stability, improved thermal performance for long service runs and reduced operating and maintenance costs. It is envisioned that the present experimental study will be very beneficial to utility managers and end-users of power transformers.

Alloys of Se100-xSb10-xAgx (x=2, 4 &8) glassy system have been obtained by quenching technique. Kinetic parameters, which represent thermal stability, have been determined from differential scanning calorimetric technique. The rate of crystallization decreases with Ag concentration and is lowest for glassy Se90Sb2Ag8 alloy. Thermal stability (T-c-T-g), Hruby criterion H-r Saad Poulain 'S' have been found to increase with Ag concentration and are maximum for Se90Sb2Ag8. Thus, one can conclude that the rate of crystallization is related to the thermal stability. The reduced glass transition temperature for Se90Sb10-xAgx is found to be 2/3, which shows that these glassy alloys are suitable for phase change optical memories.

We have synthesized a series of quinolone and fluoroquinolones derivatives substituted with p-tosyl group. All these compounds were screened as antibacterial and datas were compared with reference marketed drug viz.; Ciprofloxacin & Norfloxacin.

Theorists have pointed to the contribution of neurological system to the performance of the athletes of different sports due to the requirement of different motor actions (Payne & Morrow, 1993). The findings of nerve conduction velocity may give explanations for poor performance of the athletes due to poor muscle coordination and/or weakness of muscle actions (Wilbourn, 1990). It is more meaningful and interesting to observe the relationship of anthropometric indices and motor nerve conduction velocity in upper extremities of aerobic trained athlete like long distance runners & cyclists, who need to control their movement patterns accurately and maintained pace or speed during the performance and this requires neural adaptation in them. In theory, changes in MNCV may be an indicator of improved neural adaptations in athletes due to their exercise training program. Halar et al (1985) pointed out that the influence of physical activity is not the same for all types of exercise and that not all nerves may be affected in the same way. Campbell et al (1981) reported that the motor nerve conduction velocity is also influenced by other variables like body segment lengths/breadths and circumferences/girths. Longer nerves Abstract

red arrow, on both plots, represents the administration of bevacizumab. The average ADC is 3.16x10 m/s and 3.09x10 m/s, respectively, with coefficients of variation of 4.81% and 3.86%, respectively. The patient exhibiting progressive disease was imaged at both 1.5T and 3.0T (left) while the patient exhibiting a complete response to bevacizumab (right) was imaged only at 1.5T. Cerebrospinal fluid as an internal quality control marker

Background Structure-assisted immunogen design plays a central role in current efforts to create an effective HIV-1 vaccine. Much of this effort utilizes available structural information on Env as an antigen. Considerably less is known about the molecular determinants of Env immunogenicity. We sought to close this gap by identifying amino acid signatures in serum-derived gp160 genes that associate with broadly neutralizing antibody responses.

6558 Background: The research conducted by the NCI cooperative groups (COG) is universally considered of vital importance for discovery of new treatments against cancer. A number of these discoveries can be considered BI. However, if these BI are to improve patients' outcomes, ultimately they should be recommended in practice guidelines, such as those by the NCCN, developed by 20 leading cancer institutions in the world. We sought to determine how often BI discovered by the COG are included in the 2008 NCCN guideline. Methods: We evaluated a consecutive series of all phase III RCTs started and completed between 1955–2000 (published by Dec 2006) by 8 NCI sponsored COGs. Data from 624 trials (781 comparisons) involving 216,451 patients were analyzed. We defined BI as those judged by the original researchers to be so beneficial that they should immediately become the new standard of care or had an effect size so large that they reduced the death rate by 50% or more (hazard ratio for death was 0.5 or less). We estimated how many of these interventions are recommended in the latest NCCN guidelines (for adult cancers as NCCN does not produce childhood cancer guidelines). One expert pediatric oncologist (RW) determined a proportion of the pediatric cancer BI currently used in practice. Results: Investigators judged that 15% (115/781) of trials resulted in discovery of BI. 2% of trials (12/614) identified experimental interventions that reduced death rate ≥ 50%. 23% of BIs were in pediatric oncology, while remaining (77%) discoveries were made in adult cancers. The trials that reported these discoveries were published from 1979–2004. 53% (48/89) of these treatments are still currently recommended in the NCCN guidelines. 58% (15/26) of pediatric discoveries are still influencing pediatric oncology care today. For adult cancers, most successful interventions were in the categories of definitive treatments that lead to prolongation of survival (27%), followed by adjuvant (23%) and curative therapies (14%). Advances in pediatric oncology have been mostly pronounced in treatment of acute leukemia. Conclusions: The investment that was made in conducting of RCTs during last several decades continues to impact patients outcomes today. No significant financial relationships to disclose.

Despite the curriculum changes during the past decade, there is paucity of information regarding the structure and evaluation processes in pediatric clerkships. Information regarding the educational components of the pediatric clerkship and student evaluation practices was obtained from the pediatric clerkship directors via a paper/electronic survey. Completed surveys were received from 97 US and Canadian medical schools and were analyzed. The average length of a clerkship was 7 weeks. Most clerkships required a 4-week ward, a 1-week newborn rotation, and a 2-week ambulatory rotation. Students were evaluated on each component of the clerkship in 93.5% of the programs. All programs evaluated student's clinical performance and fund of knowledge; 85.6% evaluated student's written record. Student's clinical performance was evaluated by direct observation in 57% of the programs. Penalties for failing in clinical performance were harsher. In 56% of programs, a student failing in clinical performance failed the entire clerkship in contrast to 21.8% or 7% of the programs where a student failed the entire clerkship if they failed in the examination for the fund of knowledge or written record evaluation, respectively. The survey demonstrated a fair amount of consistency in clerkships across programs when compared with data obtained in 1981 and 1986. There was a noticeable increase in the well-baby nursery rotation; however, there was a decline in direct observation to assess physical examination or clinical performance.

A British ®eld hospital, under canvas, providing up to 200 beds, six operating tables and an eight-bed ITU (four ventilated, four HDU beds) with 650 triservice staff was established near the Kuwait/Iraq border as part of the medical provision for casualties during the Gulf War 2. This was planned to provide role 3 medical support: that is initial stabilizing surgery, with de®nitive care provided in the UK within the NHS. In addition, there were specialist burns, head and neck and neuro teams. Apart from battle casualties, patients as a result of accidents during troop movements along with routine medical and surgical illness were anticipated, and injured prisoners of war (POW). The hospital treated its ®rst case on March 7. The main campaign started on March 20. The greatest number of theatre cases on battle casualties occurred on day 2 of the action. Thereafter, theatre cases included civilians and patients returning to theatre for a further procedure. In all but three patients these returns were POWs or local civilians, as coalition casualties were repatriated home as soon as stable. A total of 352 theatre cases (189 patients) were treated by the time the hospital closed before relocation at the end of effective war activity (May 8), of whom 77 were coalition, 145 civilians (including 49 paediatric cases aged 6 months to 15 yr) and 130 POWs (Fig. 1). The maximum number of theatres in use simultaneously was three. Anaesthetic techniques were mostly using the Triservice drawover OMV vaporizers with iso ̄urane, propofol, morphine, and vecuronium, although in a number of cases remifentanil, ketamine, and TIVA was used as appropriate for the type of case. A few cases were given regional techniques. The Intensive Care Unit was used for postoperative ventilation and as an HDU. The busiest UK ®eld hospital during Gulf War 1 (1991) operated on a total of 102 cases in a 2-month period, but that campaign was remarkable for the low casualty rate. During this con ̄ict, we exceeded their caseload within 10 days of the main campaign commencing. At no time however, did the theatre workload ever approach the maximum capacity of the hospital, although discharging of Iraqi nationals from the wards posed a problem.