Miracle-dz/UniFAR-FTUs huggingface dataset:
IMPROVING THE EFFICIENCY OF Dieffenbachia picta CV TROPICA MICROROPAGATION

The best sterilizing treatment for Dieffenbachia picta cv Tropica buds was immersion for 30 min. in fungicide solution of Rizolex (2 g / L), followed by soaking in 0.3 % mercuric chloride solution for 20 min., then transferred to sodium hypochlorite solution at 1.0 % for 30 min. Establishment stage period could be decreased from 8 weeks to be only 4 weeks by culturing the buds on MS medium supplemented with (16 2ip + 2 IAA + 1 DPU mg/L) which also increased the number of shoot /explant. Different concentrations of triiodobenzoic acid (0.0, 1.0, 2.0, 4.0 or 8.0 mg/L), malt extract (0.0, 1.0, 2.0, 4.0 or 8.0 g\L), yeast extract (0.0, 1.0, 2.0, 4.0 or 8.0 g\L) or casein hydrolysate (0.0, 0.50, 1.0, 2.0 or 4.0 g\L) combined with (16 2ip + 2 IAA + 1 DPU mg/L) were tested during multiplication stage. The best treatment for shoot multiplication (10 shoots /explant) and rooting (4 roots /shoot with 6.48 cm root length) was 4 g/l malt extract combined with (16 2ip + 2 l IAA + 1 DPU mg/L). Plantlets were successfully acclimatized (95% survival percentage) in peat moss and sand (1:1, v/v).
GENETIC IMPROVEMENT OF HIGHLY GELLAN GUM PRODUCING STRAINS OF Sphingomonas paucimobilis via PROTOPLAST FUSION

Three local strains; Sphingomonas paucimobilis Kb1( S.p.Kb1), Sphingomonas paucimobilis CAAS11, (S.p.CAAS11) and Sphingomonas paucimobilis . CAAS6 S.p (CAAS6) were used throughout this investigation to improve their potentialities as gellan gum producers. Three of protoplast fusion experiments were done between the three Sphingomonas paucimobilis local strains; S.p.Kb1 (P1), CAAS6 (P2) and S.p.CAAS11 (P3) at all possible combinations and the fusants were obtained after 1 hr incubation period. Four fusants were obtained after one hour producing gellan gum higher than their parents. The obtained fusant Sp2::Sp3F4 from the third protoplast fusion experiment P2:: P3 is the best in their gum efficiency rate (two times and half than their parents), followed by the two obtained fusants; Sp1::Sp2F1 and Sp1::Sp3F2, from the other two experiments; P1 :: P2 and P1 :: P3, respectively have the same gum efficiency rate, two times than their parents. They have higher viscosity values than that of their parents. All the obtained four fusants have promising economic value and can be used from further genetic improvement. keywords; Sphingomonas paucimobilis, Protoplast fusion, Polysaccharides, Gellan gum, Viscosity and genetic improvement
Microtopographic Controls on Erosion and Deposition of a Rilled Hillslope in Eastern Tennessee, USA

Topography plays an important role in shaping the patterns of sediment erosion and deposition of different landscapes. Studies have investigated the role of topography at basin scales, whereas little work has been conducted on hillslopes, partially due to the lack of high-resolution topographic data. We monitored detailed topographic changes of a rilled hillslope in the southeastern United States using terrestrial laser scanning and investigated the influences of various microtopographic factors on erosion and deposition. The results suggest that the contributing area is the most important factor for both rill erosion and deposition. Rills with large contributing areas tend to have high erosion and deposition. Slope is positively related to erosion but negatively related to deposition. Roughness, on the other hand, is positively related to deposition but negatively related to erosion. Higher erosion and lower deposition likely occur on north-facing aspects, possibly because of higher soil moisture resulting from less received solar insolation. Similarly, soil moisture is likely higher in areas with higher terrain wetness index values, leading to higher erosion. This work provides important insight into the sediment dynamic and its microtopographic controls on hillslopes.
Identification of Micro-Organisms that Tolerant to Anti-Nutritional Factors in the Rumen of Camel

Fodder trees such as acacia are rich in antinutritional factors, mainly tannins, which constrain their utilization in animal feeding to fill the gap in feed resources. Rumen microbiota in the grazing and wild ruminant animals can detoxify plants’ secondary metabolites. Therefore, understanding the interaction between plant and rumen microorganisms could improve the fodder plants utilization and reveal antimicrobial-resistant microbial isolates. This study was conducted to get insight into the bacterial colonization and degradation of non-extracted and extracted Acacia saligna in the rumen of three fistulated camels. The findings showed that acacia has a high content of crude protein, fiber, and tannins. Tannins extraction affected the chemical composition and rumen degradation of dry matter, crude protein, and neutral detergent fiber. Furthermore, rumen degradability was increased by prolonging incubation time from 6 to 72 h. The relative abundance of plant-attached bacteria in the camel rumen varied according to tannin extraction. The bacterial community was dominated by phylum Bacteroidetes and Firmicutes and the main bacterial genera were Prevotella, RC9 gut group, Saccharofermentans, Butyrivibrio, Treponema that were affected by tannin extraction. Fibrobacteres showed sensitivity to tannins and some genera such as Alloprevotella, Selenomonas, Pyramidobacter showed resistance to plant tannins, which highlight the camel rumen as an untapped source of tannin-resistant bacteria.
Research on Networking Collaborative Tracking Technique for Multiple Maneuvering Targets Based on Game Theory

As to the collaborative technique in sensor network,an integrated multi-target collaborative tracking model was constructed based on mobile dynamic coalition under the background of multi-satellite tracking.Then as to the mobile dynamic coalition formation,a coalition formation method was proposed based on game theory.Using mobile dynamic coalition,this collaborative model exchanged and coordinated the information of nodes to accord their action.So it is distributive and self-organizing.Simulation results validate the effectiveness of collaborative model in sensor network tracking multi-target.
Energy Consumption Model of SCHC Packet Fragmentation over Sigfox LPWAN

The Internet Engineering Task Force (IETF) has standardized a new framework, called Static Context Header Compression and fragmentation (SCHC), which offers adaptation layer functionality designed to support IPv6 over Low Power Wide Area Networks (LPWANs). The IETF is currently profiling SCHC, and in particular its packet fragmentation and reassembly functionality, for its optimal use over certain LPWAN technologies. Considering the energy constraints of LPWAN devices, it is crucial to determine the energy performance of SCHC packet transfer. In this paper, we present a current and energy consumption model of SCHC packet transfer over Sigfox, a flagship LPWAN technology. The model, which is based on real hardware measurements, allows to determine the impact of several parameters and fragment transmission strategies on the energy performance of SCHC packet transfer over Sigfox. Among other results, we have found that the lifetime of a device powered by a 2000 mAh battery, transmitting packets every 5 days, is 168 days for 2250-byte packets, while it increases to 1464 days for 77-byte packets.
Sarcopenia in Chronic Liver Diseases

Background: Sarcopenia is defined as a muscle mass two standard deviations below the healthy young adult mean, and although it is associated with aging, it can also be present as a result of chronic diseases and malignancy, and it ultimately leads to decreased functional capacity and higher risk of morbidity and mortality in different groups of patients. Aim of The work: The aim of this study is to investigate the frequency of sarcopenia in HCV induced chronic liver diseases. Subjects and Methods: This case control hospital based study recruited patients with HCV-induced chronic liver disease of different functional grades according to Child-Pough and Meld scores and a group of healthy subjects as controls. All participants were assessed for demographic, hematological, and biochemical liver and renal profiles. Radiological diagnostic parameters of sarcopenia were determined by subjecting all participants to MDCT abdominal scan at the level of psoas muscle. Results: Using computed tomography measurement of psoas muscle thickness/height as a diagnostic validated test for sarcopenia, sarcopenia was detected in 52.5% of our liver cirrhosis patients. Conclusion and future recommendations In conclusion, sarcopenia is a common complication of cirrhosis and adversely affects survival, quality of life, and response to stress including infection and surgery.
Role of Optical Coherence Tomography in Primary Open Angle Glaucoma

Optical coherence tomography has emerged over the years with the ability to detect changes in the optic nerve head, retinal nerve fiber layer, and currently the ganglion cell layer much earlier than the defects manifest functionally. Thus, optical coherence tomography acts as an important diagnostic aid to diagnose and monitor the progression of this sight threatening disease called glaucoma.
Study on Modeling of Warfare Public Opinion

Mass media and human relationship communication effects are the main factors in the process of individual stand evolution. Be based upon the judgement, adopting the modeling theory based on agent to study warfare public opinion evolution, firstly, the media force agent and individual agent were described in detail; secondly, the evolution rule of individual stand was put forward. At last, a prototype system of warfare public opinion evolution model was built. Experimental testing results indicate that it is useful to quantificationally study the problem.
Investigating the radar scattering response of different land-features in the Greater Cairo area of Egypt, using the full-polarimetric SAR data

Received 09 December 2021 Accepted 13 February 2022 The full polarimetric Synthetic Aperture Radar (SAR) data offers plentiful information about the geology, geomorphology, hydrology, land cover and soil classification and therefore helps in assessing their potential for development. In this paper, the fullpolarimetric SAR (ALOS/PALSAR L-band sensor) data used for mapping different geological units and land features, which are covering some parts of the Greater Cairo area, Egypt. This paper includes data collection, data interpretation, and a validation tool, as well as methodology and preliminary findings. The ALOS/PALSAR images were extracted, decomposed, filtered and geo-referenced. Unsupervised classification scheme with 5 classes was performed for Radar data using (Wishart HA-α unsupervised classifier), and it exposed to the supervised classification technique with the assistance of the published geologic and geomorphological maps and the high resolution Landsat images ratio techniques. These five classes are categorized as follows; Urban areas: which covers 22% of the study area, Agriculture: canopy covers 53% of the study area, The Nile: about 73 km of the Nile passing through the study area, and two geological Units, Te (Tertiary, which represents sands and sandstones with clay and marl), and Tp (Tertiary Pliocene, which represents sands, sandstone and gravels). Moreover, the classification accuracy assessment (CAA) was performed for the obtained results using 327 ground control points. The CAA showed classification accuracy around 81.82% with Kappa coefficient of 0.8344. This research shows that using full-polarimetric ALOS/PALSAR data, the land cover and geology of Greater Cairo, Egypt, can be accurately mapped without suffering and wasting time, effort, or facing hazards.
Does Family Involvement in Ownership Affect Profitability and Value of Egyptian Corporations?

This study aimed to investigate the effect of family involvement in ownership (FIO) on profitability and value based on a sample of Egyptian corporations. Firm profitability and market valuation were measured by return on total assets (ROA) and Tobin's Q ratio (TQ), respectively. A panel data analysis for 67 Egyptian firms for the period 2010–2018 was employed, and the generalized method of moments (GMM) with fixed-effects estimator was applied to confirm the veracity of the study hypothesis. The research findings demonstrated that profitability and firm value is positively affected by FIO. Hence, the higher the level of FIO, the higher the profitability and market valuation of the firm. The implications of the current research highlight the vital role of FIO as a primary source of equity finance in modern corporations.
Conserved Targets to Prevent Emerging Coronaviruses

Novel coronaviruses emerged as zoonotic outbreaks in humans in 2003 (SARS), 2012 (MERS), and notably in 2019 (SARS2), which resulted in the COVID-19 pandemic, causing worldwide health and economic disaster. Vaccines provide the best protection against disease but cannot be developed and engineered quickly enough to prevent emerging viruses, zoonotic outbreaks, and pandemics. Antivirals are the best first line of therapeutic defense against novel emerging viruses. Coronaviruses are plus sense, single stranded, RNA genome viruses that undergo frequent genetic mutation and recombination, allowing for the emergence of novel coronavirus strains and variants. The molecular life cycle of the coronavirus family offers many conserved activities to be exploited as targets for antivirals. Here, we review the molecular life cycle of coronaviruses and consider antiviral therapies, approved and under development, that target the conserved activities of coronaviruses. To identify additional targets to inhibit emerging coronaviruses, we carried out in silico sequence and structure analysis of coronavirus proteins isolated from bat and human hosts. We highlight conserved and accessible viral protein domains and residues as possible targets for the development of viral inhibitors. Devising multiple antiviral therapies that target conserved viral features to be used in combination is the best first line of therapeutic defense to prevent emerging viruses from developing into outbreaks and pandemics.
Resistin as an inflammatory marker in Lupus Nephritis

Background: Systemic lupus erythematosus (SLE) is a chronic autoimmune disease that predominately affects women. It is characterized by a broad spectrum of clinical manifestations. Adipokines are a diverse family of soluble mediators with a range of specific actions on the immune response. Among the various adipokines is Resistin. Methods: 26 patients with lupus nephritis with age ranged between 18-48 years and 20 healthy age, sex and BMI matched individuals were enrolled in this study. Full history, clinical examination and laboratory investigations were performed for all patients including serum resistin level. Results: The level of serum resistin was higher in the patients than the controls (p < 0.001). Also, Serum resistin level correlated positively with the levels of ESR (p< 0.001), CRP (p= 0.008). Serum resistin levels correlated negatively with levels of C3 (p< 0.001) and C4 (p< 0.001). Conclusion: Serum resisitin level can be used as a marker of inflammation in patients with lupus nephritis.
'pEFFECT OF MEDIUM COMPOSITION ON THE HYPERHYDRICITY OF GLOBE ARTICHOKE IN VITRO

Hyperhydricity or vitrescence was a frequent problem during the micropropagation of globe artichoke and it was influenced by medium composition, and type and concentration of cytokinins used in culture medium. Using a multiplication medium containing half-strength of NH4NO3 AND KNO3 and doubly weights of calcium chloride and magnesium sulphate specified for Murashige and Skoog (MS) medium recorded the lowest value of hyperhydric cultures percentage. In addition, this medium caused significant increases in leaves dry matter % as well as chlorophyll (a) and (b) content. Supplementation of MS medium with 2.0 mg/l kinetin + 1.0 mg/l IAA was the optimum for shoot proliferation with relatively low hyperhydricity.
“I remember how to do it”: exploring upper elementary students’ collaborative regulation while pair programming using epistemic network analysis

ABSTRACT Background and Context Students’ self-efficacy toward computing affect their participation in related tasks and courses. Self-efficacy is likely influenced by students’ initial experiences and exposure to computer science (CS) activities. Moreover, student interest in a subject likely informs their ability to effectively regulate their learning in that domain. One way to enhance interest in CS is through using collaborative pair programming. Objective We wanted to explore upper elementary students’ self-efficacy for and conceptual understanding of CS as manifest in collaborative and regulated discourse during pair programming. Method We implemented a five-week CS intervention with 4th and 5th grade students and collected self-report data on students’ CS attitudes and conceptual understanding, as well as transcripts of dyads talking while problem solving on a pair programming task. Findings The students’ self-report data, organized by dyad, fell into three categories based on the dyad’s CS self-efficacy and conceptual understanding scores. Findings from within- and cross-case analyses revealed a range of ways the dyads’ self-efficacy and CS conceptual understanding affected their collaborative and regulated discourse. Implications Recommendations for practitioners and researchers are provided. We suggest that upper elementary students learn about productive disagreement and how to peer model. Additionally, our findings may help practitioners with varied ways to group their students.
Flexibility study of horizontal well cyclic steam simulation assisted by combination gas and cleanup addictive for shallow-thin heavy oil reservoir

In order to further study the application of combination gas(fuel gas) and cleanup additive assisted cyclic steam simulation technology in shallow-thin layer heavy oil reservoir,oil displacement efficiency and plugging capability of four assisting patterns were evaluated by laboratory physical simulation experiment,and then the geological boundary and optimum parameters of horizontal well cyclic steam simulation assisted by combination gas and cleanup agent adapted to the target block were defined and optimized through numerical simulation.The results show that the displacement efficiency of steam flooding assisted by combination gas and cleanup additive stays 16.2%,11.0% and 8.0% higher than that of pure steam flooding,cleanup additive assisted steam flooding and nitrogen cleanup addictive assisted steam flooding,respectively.The sealing capability of foam formed by the combination of gas and cleanup agent is superior to others.For this block,the critical effective thickness of horizontal well cyclic steam simulation assisted by combination gas and cleanup agent decreases with the increase of permeability.And the critical permeability increases as effective thickness enlarges.Based on the determination of geological boundary,the optimum charts and range for mixed injection ratio,steam injection strength and injection volume of combination gas and cleanup additive are acquired by varying different permeability and effective thickness combination.This technology has been successfully applied in two horizontal wells,which provides a guiding role in expanding this technology in shallow-thin layer heavy oil reservoir.
Direct generation of a stable multi-beam pulsed 355 nm UV laser based on a micro-lens array

Multi-beam laser processing is a very popular method to improve processing efficiency. For this purpose, a compact and stable multi-beam pulsed 355 nm ultraviolet (UV) laser based on a micro-lens array (MLA) is presented in this Letter. It is worth noting that the MLA is employed to act as the spatial splitter as well as the coupling lens. With assistance of the MLA, the 1064 nm laser and 532 nm laser are divided into four sub-beams and focused at different areas of the third-harmonic generation (THG) crystal. As a result, the multi-beam pulsed 355 nm UV laser is successfully generated inside the THG crystal. The measured pulse widths of four sub-beams are shorter than 9 ns. Especially, the generated four sub-beams have good long-term power stability benefitting from the employed MLA. We believe that the generated stable multi-beam 355 nm UV laser can meet the requirement of high-efficiency laser processing, and the presented method can also pave the way to generate stable and long-lived multi-beam UV lasers.
Simulation methods of prestress in numerical analysis of large aqueduct

In finite element analysis,there are mainly three ways of applying prestress,including equivalent load method,initial strain method and decreasing temperature method. Taking a concrete beam with rectangular cross-section as an example,prestress is applied by these three methods. It's concluded that initial strain method and decreasing temperature method have higher accuracy and can reflect the axial force distribution of reinforced steel bar. A contrast of the characteristics of these three methods is made. In view of the complex three-dimensional prestressed structure of large concrete aqueduct,the most suitable method of prestress simulation is found. Taking the large prestressed aqueduct in the middle line of South to North Water Transfer Project as the background,the finite element analysis,the initial strain method and the decreasing temperature method are separately carried on. It's suggested that the decreasing temperature method is more reasonable for the numerical simulation of complex three-dimensional prestressed aqueduct structure.