Entanglement Capacity of Nonlocal Hamiltonians : A Geometric Approach

We develop a geometric approach to quantify the capability of creating entanglement for a general physical interaction acting on two qubits. We use the entanglement measure proposed by us for $N$-qubit pure states (PRA \textbf{77}, 062334 (2008)). Our procedure reproduces the earlier results (PRL \textbf{87}, 137901 (2001)). The geometric method has the distinct advantage that it gives an experimental way to monitor the process of optimizing entanglement production.Comment: 8 pages, 1 figure

Numerical Investigation of the Optimum Angle for Open Channel Junction

Numerous natural and artificial streams, including those for irrigation ditches, wastewater treatment facilities, and conveyance structures for fish movement, have open channel confluences. The flow dynamics at and around the junction are intricate; in particular, immediately downstream of the junction, the flow creates a zone of separation on the inner wall along with secondary recirculation patterns. The structure of this complicated flow depends on several factors, including the flow rates in both channels, the angle of confluence, the geometry of the channels, including the longitudinal slope and bed discordance, the roughness of the boundary, and the intensity of the turbulence. It also has a significant impact on bed erosion, bank scouring, etc. The objective of the current work is to calculate the velocity profile and the separation zone dimensions for four angles (30o, 45o, 60o, and 75o) through the simulation process, and the best angle using a three-dimensional model. This work gives a detailed application of the numerical solution (Finite Volume) via Flow 3D software. Results for two flow discharge ratios, q*=0.250 and q*=0.750 were shown; the numerical model and the experimental results agreed well. The findings are consistent with past research and demonstrate how the main channel flow pattern is affected by changes in the channel crossing angle, as well as how greater separation zones are produced in the main channel when the flow discharge ratio q* (main channel flow divided by total flow) is smaller. Analysis revealed that the separation zone's smallest diameter will be at the 75ocrossing angle. Doi: 10.28991/CEJ-2023-09-05-07 Full Text: PD

On Analysis and Evaluation for Predicting Students’ Academic Performance GPA Considering an Engineering Institution (Neural Networks’ Modeling Approach)

Predicting students’ performance is one of the most important topics for learning contexts such as schools and universities, since it helps to design effective mechanisms that improve academic results. Educational Institutions face numerous challenges today in providing quality and student-centric education to Students Individual learners prefer their own strategies originated from diverse learning styles. Learning style models may include collective strategies for mental, emotional, and physiological components. On the basis of such components, this piece of research suggests a specific quantified learning style preferred by learners in engineering education. By following average learners’ achievements (marks) at specific courses closely related to the specialization, interesting analytical results for Grade Point Average (GPA) evaluation are obtained. Moreover, an ANN model with supervised learning is presented to simulate diverse learning styles performance. Accordingly, optimal guided advise is suggested in fulfillment of probabilistically best GPA of graduated engineers. Obtained simulation results are well supported by the findings of experimental case study

Effect of 6-benzylaminopurine (BAP) in different basal media on shoot multiplication of Aquilaria hirta and detection of essential oils in the in vitro shoots

Aquilaria hirta, locally known as ‘chandan’ or ‘chandan bulu’, is used interchangeably with Aquilaria malaccensis (karas) to produce gaharu. With the decline in the A. malaccensis populations, harvesting of this precious wood has begun to extend to A. hirta. There is also an increasing interest to plant karas trees and related species. Therefore, a rapid propagation method is necessary to meet the increasing demand for planting materials as well as for conservation purposes. In this paper, we reported on the effect of 6-benzylaminopurine (BAP) in different basal media, Murashige and Skoog (MS) (1962) and woody plant medium (WPM) on shoot multiplications of A. hirta using nodal segments from young seedlings of A. hirta as explants and the chemical analyses of essential oils present in the in vitro shoots. The MS medium supplemented with 0.1 mg/l BAP was the most effective for multiple shoot formation in A. hirta, producing an average of 6.1 shoots per culture, which is significantly higher than other treatments. New shoots produced attained a length of 0.4 to 1.8 cm within 25 days in both MS and WPM basal media. The highest length of new shoots was obtained in WPM containing 0.1 mg/l BAP. Analysis of the oils by gas chromatography (GC) and gas chromatography-mass spectrometry (GCMS) revealed the presence of β-caryophyllene in trace amounts. Other compounds detected were tetradecanal, hexadecanoic acid, methyl linoleate, linoleic acid, isophytol and phytol acetate.Key words: Aquilaria hirta, Chandan, shoot multiplication

Electrodeposition of NiCr Nanowires Using Anodic Aluminum Oxide

 يشير هذا البحث الى تصنيع اسلاك نانوية لسبيكة نيكل-كروم بواسطة الترسيب الكهروكيميائي. انجز الترسيب الكهروكيميائي على اساس من اوكسيد الالمنيوم المؤنود ( AAO ) ذات ثقوب نانوية قطرها ( 70 nm ). تمت عملية الانودة للالمنيوم بأستعمال حامض الاوكزالك وذلك بخطوتين من الانودة للحصول على الاساس AAO ثم تلاها ترسيب سبيكة نيكل-كروم من املاح كبريتات النيكل وكبريتات الكروم وكانت نسب العناصر الناتجة للسبيكة هي 72.3Ni27.7Cr . الاسلاك النانوية الناتجة تم تشخيصها بأستعمال المجهر الالكتروني SEM والمجهر الالكتروني TEM.ان الاسلاك النانوية الناتجة تمتلك قطر بمقدار( 70 nm ) وطول ( 420-500 nm ).This research highlights fabrication of NiCr nanowires by electrochemical deposition. The deposition was achieved using anodic aluminum oxide AAO template with 70 nm diameter of pores. The anodization was performed using oxalic acid with two steps to obtain AAO template. 72.3Ni27.7Cr nanowires were obtained using nickel and chromium sulfate. The nanowires were characterized by SEM and TEM. The obtained nanowires with 70 nm diameter and 420-500 nm length