New Models for Predicting Pore Pressure and Fracture Pressure while Drilling in Mixed Lithologies Using Artificial Neural Networks.

Precise prediction of pore pressure and fracture pressure is a crucial aspect of petroleum engineering. The awareness of both fracture pressure and pore pressure is essential to control the well. It helps in the elimination of the problems related to drilling, waterflooding project, and hydraulic fracturing job such as fluid loss, kick, differential sticking, and blowout.

Prediction of the Rheological Properties of Invert Emulsion Mud Using an Artificial Neural Network.

Successful drilling operations require optimum well planning to overcome the challenges associated with geological and environmental constraints. One of the main well design programs is the mud program, which plays a crucial role in each drilling operation. Researchers focus on modeling the rheological properties of the drilling fluid seeking for accurate and real-time predictions that confirm its crucial potential as a research point.

Timing of initiation of low-molecular-weight heparin administration in pregnant women with antiphospholipid syndrome: a randomized clinical trial of efficacy and safety.

Objective: We aimed to evaluate the effect of different timing of initiation of low-molecular-weight heparin (LMWH) administration on the pregnancy outcomes in women with antiphospholipid syndrome (APS).

Materials And Methods: A randomized controlled study was conducted on women with obstetrical APS. All participants were randomly divided at documentation of positive pregnancy test into two groups; early initiation group in which LMWH therapy was started once positive pregnancy test was established (in the fifth week of gestation), and later initiation group in which LMWH therapy was started after sonographic confirmation of fetal cardiac pulsation (in the seventh week of gestation).

Single-Stage Complete Repair versus Multistage Repair of Tetralogy of Fallot with Borderline Pulmonary Arteries.

Background: Tetralogy of Fallot is the most common cyanotic congenital heart defect. Borderline pulmonary anatomy has been associated with a higher risk of mortality and morbidity. Strategies to manage this condition-namely, single- or multistage repair-have long been debated.

Ectopia cordis, a successful single stage thoracoabdominal repair.

This is a report of a case of the rare ectopia cordis malformation of the thoracoabdominal type without intracardiac anomalies. The patient had a successful single stage repair with reduction of the herniating heart and reconstruction of a cartilaginous cover to protect the heart. The result was very good and the follow up for 13 months was very satisfactory.

Comparative clinical trial of topical anesthetic agents in cataract surgery: lidocaine 2% gel, bupivacaine 0.5% drops, and benoxinate 0.4% drops.

Purpose: To assess the efficacy of lidocaine gel, bupivacaine drops, and benoxinate drops as topical anesthetic agents in cataract surgery.

Setting: Kasr El-Aini Hospital, Cairo University, Cairo, Egypt.

Methods: This prospective randomized study comprised 90 patients scheduled for routine cataract extraction.

Delayed sternal closure: a life-saving measure in neonatal open heart surgery; could it be predictable?

Objectives: The tight syndrome after open-heart procedures in neonates renders delayed sternal closure (DSC) a life-saving measure. The goal of this study is to analyze the risk factors that may predict the need for DSC.

Methods: Between January 1991 and December 2000, 312 consecutive open-heart procedures in neonates (180 males, 132 females) were studied retrospectively.