Factors Affecting Biological Control of Pythium Ultimum on Alfalfa using Seed Treatment with Gliocladium Virens, Trichoderma Harzianum and T. Hamatum

Gliocladium virens Miller et at. applied as a seed treatment controlled alfalfa (Medicago sativa L. ‘Travois’) damping-off in natural soils artificially infested with high levels of Pythium ultimum Trow, but Trichoderma hamatum (Bon.) Bain and Trichoderma harzianum Ragai were not effective at relatively high soil pH levels. Biocontrol with G. virens was nearly as effective as metalaxyl seed treatment, and better than Captain in most environments. Biocontrol was optimum at sail temperatures between 15 and 30 C, soil moistures of 15% to 30%, soil pH of 6 to 8 and when seeds had been treated with conidial concentrations of 109 spores/ml or greater. In a parallel study of steamed soils infested with P. ultimum, biocontrol was most effective between 25 and 35 C. at relatively low soil moistures, and as pH levels of 6 to 8. Amendment of the biocontrol spore suspension with bleached chitin did not affect the ability of the antagonists to protect alfalfa against P. ultimum, while unbleached chitin consistently destroyed effective biocontrol. G. virens seed treatment also effectively controlled damping-off in field tests. In vitro, 30 C and lower pH levels were optimum conditions for growth and sporulation of all three biocontrols

NASA Lewis F100 engine testing

Two builds of an F100 engine model derivative (EMD) engine were evaluated for improvements in engine components and digital electronic engine control (DEEC) logic. Two DEEC flight logics were verified throughout the flight envelope in support of flight clearance for the F100 engine model derivative program (EMPD). A nozzle instability and a faster augmentor transient capability was investigated in support of the F-15 DEEC flight program. Off schedule coupled system mode fan flutter, DEEC nose-boom pressure correlation, DEEC station six pressure comparison, and a new fan inlet variable vane (CIVV) schedule are identified

Science as a Subject of Learning in Islamic University

This paper aims to searching theological impact when applied a science as a subject of learning at Agrotechnology Department in the Faculty of Sciences and Technology of State Islamic University of Bandung. The atmospheric experiment was implemented as a subject of learning. By observing the atmospheric data recorded, the plant growth measured significantly affected by the implementation of treatments, the best water supply and fertilizer application. Furthermore, it found that local climate has changed, and Schmidt and Ferguson classification of regional rain types is no more valid, thus, should be renewed. The experiment impacted to a science learning program in Islamic University. Climatic change is a natural law affected by human destructed to the nature. It has been affecting farmers to maintain for their plantation activities. When organisms were effort to surviving in warmer and unpredictable condition, that is shows to human kind has to obligatory to the Almighty God

Arteriovenous Fistulas: The Pathological Bridge

An intracranial dural arteriovenous fistula (DAVF) is a type of intracranial vascular malformation in which there is a connection between an intracranial artery and a dural venous sinus. It accounts for 10–15% of all intracranial arteriovenous malformations. This malformation derives its arterial supply primarily from meningeal vessels, and the venous drainage is either via dural venous sinuses or through the cortical veins. DAVFs have a reported association with dural sinus thrombosis, venous hypertension, previous craniotomy, and trauma, though many lesions are idiopathic. Digital subtraction angiography remains the gold standard for diagnosing these fistulas. Endovascular treatment is one of the first line options available for their management. In this chapter, we will discuss and review the etiopathogenesis, natural history, common classification systems, and various available diagnostic options

Thoracoscopic excision of asymptomatic posterior mediastinal ganglioneuroma. A case series study

Background Posterior mediastinal ganglioneuroma is the most frequent type of neurogenic tumors, and usually it is asymptomatic. The surgical approach to excise it may differ from center to center based on the surgeon's experience as well as the size of tumor. We aim to present our center's experience and short-term outcomes in surgical excision of posterior mediastinal ganglioneuroma. Methods This retrospective case series study, from June 2019 till December 2022, included 9 asymptomatic patients with mean age of 31± 5 years who expressed lesion in the posterior mediastinum. The mean size of the tumor was   5.3±3.6 cm in maximal dimensions.  Results There were 7 males and 2 females with mean age was 31± 5 years,  the excision by video-assisted thoracoscopy (VATS)  was  employed in 8 patients and conventional thoracotomy was carried out in 1 case.  The mean operative time was 57±14 minutes with mean operative blood loss 50±10 ml. The mean postoperative chest tube drainage was 120±80 ml and no complications related to the procedures were observed. The average time of hospital stay after VATS treatment was 2 days, while after thoracotomy it was 5 days and patient suffered from ptosis that eventually recovered after 1 month with supportive treatment. Histopathological examination confirmed benign nature of ganglioneuroma in all cases. Conclusions Thoracoscopic excision of asymptomatic posterior mediastinal neurogenic tumor is safe, feasible and reduces postoperative pain, however, open technique might be considered for large-sized tumor to minimize the possible complications