Miracle-dz/UniFAR-FTUs huggingface dataset:
Sol–gel derived hydroxyapatite coating on titanium implants: Optimization of sol–gel process and engineering the interface

Sol–gel derived hydroxyapatite coatings on metallic implants are important to promote their osseointegration and biocompatibility. However, such coatings generally suffer from drawbacks that limit implant longevity. In this study, the sol gel process to prepare hydroxyapatite was optimized and used to deposit a hydroxyapatite layer on Ti6Al4V. Samples were pretreated by thermal oxidation, sol–gel coating, and anodization to produce titanium dioxide interlayers with various structures. The results of structural and thermal analysis have determined the optimal preparation parameters to produce monophasic and crystalline hydroxyapatite. The introduction of titanium dioxide intermediate layers produced crack-free hydroxyapatite films and promoted the adherence and integrity of the coating, where the adhesive strength was remarkably improved. Furthermore, potentiodynamic polarization tests in simulated body fluid revealed low corrosion rates and high protection property of the hydroxyapatite/titania coated samples, making these structures promising for the coatings of bone replacements. Graphical abstract
Cityscape-Selected Outcomes of Housing Assistance

The urban built environment develops over decades around fixed infrastructure. Los Angeles began its major growth at the dawn of the automobile era and became a low-density, dispersed metropolis organized around a vast freeway system. Since the 1990s, local governments have sought to restructure Los Angeles, shifting toward higher density, mixed-use housing and commercial development. A large investment in new rail transit lines is seen as critical to achieving these land use goals, mainly through promotion of transit-oriented development. In this article, we examine how employment patterns have changed around newly built Los Angeles rail stations. Results suggest that employment did not increase near stations immediately before or after station opening, but a few stations saw increased employment 5 to 10 years after opening.
μPlasmaPrinting of amine-containing polymer lms using APTMS (3-aminopropyl trimethoxysilane)

In this M.Sc. thesis work, the plasma polymerization of amine containing 3-aminopropyl trimethoxysilane (APTMS) by a μPlasmaPrint system is investigated on a uorocarbon polymer substrate (FEP). The μPlasmaPrint system utilizes a (multi) pin-to-plate dielectric barrier discharge at atmospheric pressure. The deposition of APTMS, which is injected into the plasma region by means of nitrogen carrier gas, is performed in a ow rate controlled polymerization regime, which results in a lm thickness of 8 nm per μPlasmaPrint repeat (PR). The number of print repeats was varied from 1− 20 PR. The APTMS monomer is polymerized by the formation of siloxane bonds, via the dissociation of its methyl groups by hydrolysisand condensation reactions. For 1 PR it is found that the aminopropyl chain is predominantly retained, providing an amine concentration of ∼ 9 at. % (according to the XPS peak deconvolution). The high surface concentration of amine functionalities resulted in a (static) water contact angle of 10 ± 5 o, accompanied by a relatively high (polar) surface energy. Oxidation during and/or immediately after deposition reduces the lms functionality when the number of print repeats is increased. After 20 PR, the amine concentration in the top 10 nm of the lm is reduced to ∼ 5 at. % and the water contact angle is increased to 45 ± 3 o. After comparison with experiments where the APTMS deposition is carried out on glass substrates, it is suggested that for the FEP substrate, the incorporation of CF groups in the APTMS lm impedes the oxidation of thin APTMS lms (1− 3 PR). After deposition, the presence of amine functionalities is also reduced, both due to post-deposition oxidation and due to hydrophobic recovery. Furthermore, the ability of the amine functionalities to promote immobilization reactions is demonstrated by means of two examples: an electroless plating process is performed and uorescamine molecules are anchored to the amine functional groups. The measured uorescent intensity of the amine-bonded uorescamine is found to be consistent with the amine concentration, which is derived by XPS. M.Sc. Thesis Jean-Paul Schalken
Nhlh1 and Nhlh2, a global transcriptional mechanism regulating commissural axon projection via Robo3 activation

Commissural neurons are highly heterogeneous in their developmental origins, neurotransmitter type and function, but all share the common feature of projecting axons across the midline. The floor plate-crossing commissural axons in mammals, from the spinal cord to the midbrain, are guided by a conserved molecular mechanism relying primarily on Netrin-1/DCC/Robo3 signaling. Up to date, we know very little about the upstream transcriptional program that specify commissural axon laterality, neither do we know if a common mechanism operates in all commissural neurons. Here, we identified a pair of highly related helix-loop-helix transcription factors, Nhlh1 and Nhlh2, as a global transcriptional mechanism that controls the laterality of all floor plate-crossing commissural axons. Forced expression of Nhlh1/2 induce ectopic Robo3 expression and contralateral axon projections. And mutant mice deficient in both genes show a remarkable reduction in Robo3 expression and a total lack of ventral commissures from the spinal cord to the midbrain. This global mechanism may interact with neuron type specific mechanism to achieve specific generation of commissural circuits.
Machine-learning selection of optical transients in the Subaru/Hyper Suprime-Cam survey

We present an application of machine-learning (ML) techniques to source selection in the optical transient survey data with Hyper Suprime-Cam (HSC) on the Subaru telescope. Our goal is to select real transient events accurately and in a timely manner out of a large number of false candidates, obtained with the standard difference-imaging method. We have developed the transient selector which is based on majority voting of three ML machines of AUC Boosting, Random Forest, and Deep Neural Network. We applied it to our observing runs of Subaru-HSC in 2015 May and August, and proved it to be efficient in selecting optical transients. The false positive rate was 1.0% at the true positive rate of 90% in the magnitude range of 22.0--25.0 mag for the former data. For the latter run, we successfully detected and reported ten candidates of supernovae within the same day as the observation. From these runs, we learned the following lessons: (1) the training using artificial objects is effective in filtering out false candidates, especially for faint objects, and (2) combination of ML by majority voting is advantageous.
INFLUENCE OF SOME HERBICIDES ON BARLEY YIELD, YIELD COMPONENTS AND THE COMMON ASSOCIATED WEEDS

This investigation was carried out at the Agricultural of the National at Shalakan, Governorate, Egypt. through two successive seasons (1997/98 and 1998/99) to study the influence of some herbicides on barley yield, yield components and the common associated weeds. The results showed that hand weeding and Isoproturon as well as Bentazon at the high dose were very effective in controlling the most annual weeds up to 80 days after barley sowing in both seasons. Chlorotoluron, Bentazon and Bromofenoxin as well as hand weeding treatment gave the best broad-leaved weed control more than the other treatments. While, Isoproturon and hand weeding treatments showed the best grass weed control in both seasons compared to the other treatments. Foliar application of Isoproturon at 0.650 kg a.i./fed, Bromofenoxin at 0.500 kg a.i./fed and hand weeding treatment improved the growth of barley plants and produced the tallest plants, the highest values of number of spikes/m², spike length, number of spikelets/spike, the heaviest weight of 1000-grain and the highest grain and straw yields/fed compared with the other treatments in both seasons. All weed control treatments achieved an increase in protein, phosphorus, potassium and total carbohydrates percentage of barley grains when compared with unweeded check.
Experimental and numerical studies on the hot spot stress calculation method for welded CHS X-joints stiffened by internal ring stiffeners

Ring stiffeners are usually used to enhance the strengths of welded hollow section joints, which may change the magnitude and distribution of hot spot stress around intersections related to the fatigue life of the joints. Up to date, there is no relevant research on the hot spot stress and its calculation method for welded CHS X-joints with internal ring stiffeners in combined load cases, causing a lack of confidence in the fatigue design process. Experimental tests including two types of load cases are firstly carried out to provide a reference for the finite element (FE) modeling. FE analysis is conducted to investigate the influence of internal ring stiffeners on hot spot stress, covering a variety of numbers, thicknesses and spacing of internal ring stiffeners. The hot spot stress calculation method is developed. A fatigue test is subsequently conducted. It is shown that the hot spot stress near the intersection region of the ring stiffeners and tubes is relatively large in addition to those at the crowns and saddles. The locations of interest include both traditional locations and intersection locations of ring stiffener contours and tube contours. Setting ring stiffeners can averagely reduce the hot spot stress ranges by 23.6% in chord and 27.8% in brace, respectively. The extended hot spot stress calculation method is verified for the fatigue design of welded CHS X-joints with ring stiffeners. In the subsequent fatigue test, fatigue failure is found at the intersection locations. A dynamic effect is also observed which is related to the change in load eccentricity. The fatigue strength curve specified in CIDECT design guide No.8 could also be applicable to predict the fatigue life of the welded CHS X-joint with ring stiffeners.
Triple-differential cross-sections for two-photon double ionization of He near threshold

Complete two-photon break-up of He near threshold has been investigated by solving the time-dependent closing-coupling equations on a numerical lattice. We have obtained good agreement for the total double ionization cross-section with previous theoretical results. The triple-differential cross-sections exhibit interesting features as the two-photon energy approaches the threshold of double ionization. We found that two-electron ejection with equal energy sharing is most probable near the two-photon threshold, in contrast to the case away from threshold, where ejection with large unequal energy sharings is most probable.
Phytoplankton Light Absorption Impacted by Photoprotective Carotenoids in a Global Ocean Spectrally‐Resolved Biogeochemistry Model

The chlorophyll‐specific absorption spectrum of phytoplankton aPH∗(λ) $\left[{a}_{\mathrm{P}\mathrm{H}}^{\ast }(\lambda )\right]$ multiplied with phytoplankton chlorophyll provides the total absorption coefficient of phytoplankton [ aPH(λ) ${a}_{\mathrm{P}\mathrm{H}}(\lambda )$ ], a fundamental quantity with significance in many marine biogeochemical (BGC) and environmental processes. Representing accurately the sources of variability of aPH(λ) ${a}_{\mathrm{P}\mathrm{H}}(\lambda )$ in BGC ocean models is a crucial task. The two main sources of variability in aPH∗(λ) ${a}_{\mathrm{P}\mathrm{H}}^{\ast }(\lambda )$ are changes in the pigment composition of the phytoplankton community and the size‐dependent constraints to pigment packaging. Therefore, changes in community structure and physiological state impact aPH∗(λ) ${a}_{\mathrm{P}\mathrm{H}}^{\ast }(\lambda )$ and consequently aPH(λ) ${a}_{\mathrm{P}\mathrm{H}}(\lambda )$ . The objective of this work is to improve estimates of aPH(λ) ${a}_{\mathrm{P}\mathrm{H}}(\lambda )$ in a BGC model of the global ocean by portraying the variability of aPH∗(λ) ${a}_{\mathrm{P}\mathrm{H}}^{\ast }(\lambda )$ driven by the variable content in photoprotective carotenoids (PPCs) in the phytoplankton community. We used a three‐dimensional spectrally‐resolved BGC model to simulate the inherent and apparent optical properties of the global ocean based on its content on optically active constituents. The aPH∗(λ) ${a}_{\mathrm{P}\mathrm{H}}^{\ast }(\lambda )$ for each phytoplankton type represented in the model were made variable as a function of the type‐specific content in PPCs. By comparing model‐derived aPH(λ) ${a}_{\mathrm{P}\mathrm{H}}(\lambda )$ to satellite retrievals and an extensive field data set of optical and BGC observations, we concluded that photoprotective pigments content impacted significantly the contribution of the aPH(λ) ${a}_{\mathrm{P}\mathrm{H}}(\lambda )$ to the total non‐water absorption in the ocean. Pigment‐impacted aPH∗(λ) ${a}_{\mathrm{P}\mathrm{H}}^{\ast }(\lambda )$ contributed to reproduce the global variability of aPH(λ) ${a}_{\mathrm{P}\mathrm{H}}(\lambda )$ as well as the observed bio‐optical relationship between aPH(λ) ${a}_{\mathrm{P}\mathrm{H}}(\lambda )$ and chlorophyll. The improved representation of the aPH(λ) ${a}_{\mathrm{P}\mathrm{H}}(\lambda )$ of the phytoplankton community influenced model simulations in terms of water‐leaving radiances.
Combined Sofosbuvir/Daclatasvir and Chemotherapy Markedly Improve The Outcome of B-Lymphoid Malignancies in Patients with Both HCV Infection and B-Lymphoid Malignancy

Background: A high prevalence of hepatitis C virus (HCV) seropositivity is found in patients with B-cell lymphoproliferative disorders. Many studies show improvement of lymphoid malignancies outcome with the use of anti HCV treatment in patients with HCV infection and lymphoid malignancies especially indolent B cell lymphoma. Objective: This study aimed to examine the hypothesis if sofosbuvir based direct-acting antivirals (DAAs) combination could improve the outcome of patients with B cell lymphoid malignancies and HCV infection. Patient and Methods: During the period from January 2017 to December 2019 all eligible patients diagnosed with B-lymphoid malignancies presented at Sohag University Hospital and Sohag Cancer Institute were included in the study. HCV positive patients were randomized to receive sofosbuvir based DAAs combination either concomitant with or after the end of chemotherapy. Results: Patients with HCV infection are more likely to have advanced stage disease (stage 3/4), extra-nodal presentation, liver and BM infiltration. Disease free survival (DFS) and overall survival (OS) were better in the group that received sofosbuvir DAAs combination after the end of chemotherapy treatment compared to the other groups (P = 0.000, 0.000 respectively) and was not different between patients who received sofosbuvir based combination concomitant with chemotherapy and HCV negative B-lymphoid malignancies. Conclusion: Sofosbuvir based DAAs combination improve the outcome of different types of lymphoid malignancies (DFS, OS) in patients with HCV infection associated lymphoid malignancies especially when given after the end of chemotherapy.
Modelling Vehicle Emissions and Fuel Consumption Based on Instantaneous Speed and Acceleration Levels

Transportation pollutants affect air quality and result in climate changes. This study aims to develop emission and fuel consumption models. The study was undertaken in Greater Cairo Region where congestion episodes such as acceleration and deceleration are the most vehicle operating modes. The available data were obtained from Egyptian Environmental Affairs Agency for different types of fuel that include; Diesel, Gasoline and Natural Gas. Second-by-second data points were collected using an on-board emission measurement system. The data include fuel consumption and emission rates for nine vehicles.The final models are used to predict values of nitrogen oxides (NOx), hydrocarbons (HC), carbon monoxide (CO), carbon dioxide (CO2) and fuel consumption (FC). The predicted fuel consumption and emissions models were found to be accurate with (R2) ranging from 0.70 to 0.95. The study alsodemonstrated that emissions and fuel consumption are more sensitive to the acceleration than to speed. Furthermore, deceleration activities reduce the emission of vehicles.
COMPARISON OF SINGLE TRAIT WITH MULTIPLE TRAIT SELECTION IN BARSEEM CLOVER (Trifolium alexandrinum, L.)

Comparison of single trait of selection (total green forage yield) via combining ability test, with multiple trait selection (total green forage yield, dry weight of root nodules and seed yield ) by using independent culling levels or Index selection for the improvement of barseen clover ( Trifolium alexandrinum, L.) were obtained from 100 polycrosses isolated from a base population represented the second generation of random mating for a seed synthetic composed from 23 farmer’s seed lots of Meskawi (Multi-cut) type. Selection intensity was 10% for the three systems. Selection for multiple trait was significantly much rewarding than single trait selection. A realized gains of 12.20, 17.40, 17.20, 28.50, 14.10, 17.90 and 8.55% from index selection were obtained vs.6. 58, 5.96,3.79, 10.27,7.87,55.05 and 4.47% from single trait recurrent selection for total green forage , dry forage , protein and seed yields, seed index, dry weight of nodules and leaves/stem ratio, relative to the base population. Although index selection gave higher magnitudes of realized gain relative to either the base population or the check varieties, these figures were not significantly different from those obtained with independent culling levels. The amount of effort required for index selection method is somewhat greater beside that, breeder should wait until all observations are recorded to construct an index. These are not essential with independent culling.
A Novel Double-layer Low-profile Multiband Frequency Selective Surface for 4G Mobile Communication System

A novel double-layer multiband, low-profile frequency selective surface (FSS) for IMT-Advanced (4G) mobile communication system is presented in this article. On aspired to a minimum transmission coefficient of −10 dB for surface materials when the frequency bands targeted for blocking are stopped. For this project, we chose the dielectric substrate FR4 (loss-tangent = 0.02; dielectric constant = 4.54) and a thickness of 1 mm. Dodecagonal rings, upright bars, and square frame make up the FSS unit cell. The desired frequency responses of the FSS were intended to avoid being changed according to the angle of incidence of the electromagnetic waves. The FSS design is proposed as a symmetrical structure to make it polarization-independent and is aimed to stop 800, 900, 1800, 2100, and 2600 MHz frequencies to prevent harmful effects to human health and interference effects at these frequencies. With a cell size of 0. 17λ, the planned FSS is quite small and, thus, has a low sensitivity at the angle of the incident wave. In addition, FSS geometry was manufactured by a printed circuit board (PCB) and measured in a non-reflective environment after being studied in Ansys high-frequency structure simulator (HFSS) software. By comparing the analysis and measurement results of the design, the success of the FSS to the frequencies to be stopped has been verified. The effect of each patch on different frequencies has been examined by drawing the surface current density graphs of the design.
Causal Structures of Dynamic Black Holes

Dynamic space‐times, especially those manifesting horizons, provide useful laboratories for examining how macroscopic quantum behaviors consistently co‐generate gravitational phenomena. For this reason, the behaviors and large‐scale causal structures of spatially coherent dynamic black holes will be explored in this presentation. Geodesic motions on an evaporating black hole will also be presented. Research recently completed with Beth Brown, including her final Penrose diagram for an accreting black hole, will be presented.
TWO-DIMENSIONAL QUANTUM ANTIFERROMAGNETS

This review presents some theoretical advances in the field of quantum magnetism in two-dimensional systems, and quantum spin liquids in particular. It is to be published as a chapter in the second edition of the book "Frustrated spin systems", edited by H. T. Diep (World-Scientific). The section (Sec. 7) devoted to the kagome antiferromagnet has been completely rewritten/updated, as well as the concluding section (Sec. 8). The other sections (Secs. 1-6) are unchanged from the first edition of the book (published in 2005)
A Case Study on Gross and Net Non-performing Assets of State bank of India

The main objective of present study is to examine Gross non-performing assets and net non-performing assets of State Bank of India. For the present case study researcher has select five years period of study started from 2015-16 to 2019-20. Researcher has selected five NPA ratios; Gross NPA, Net NPA, Provision coverage ratio, Cash deposit ratio and Interest spread ratio. Chi- square test; time series analysis (Manually calculated) is applied on selected ratios of non-performing assets of State Bank of India. The study found out that there is no significant association in all selected ratios of state bank of India. It means in all the selected financial years ratios of non-performance assets is similar and null hypothesis is accepted. In this era banking sector has major suffer from non-performing assets. State bank of India is oldest bank with higher market capital. The paper investigates NPA of State Bank of India. This study helps to investors & managerial board for decision making.
EFFECT OF NITROGEN AND POTASSIUM FERTILIZATION ON GROWTH, FLOWERING AND YIELD OF PUMPKIN (CUCURBITA PEPO L.)

Two field experiments were conducted during the summer seasons of 1995 and 1996 in the Agricultural Experimental Station, at Abies, Alexandria University, to study the effects of four N levels (0,30, 60 and 90 kg N fed. -1 ) and four K levels (0, 36, 72 and 108 kg K 2 o fed. -1 ) on vegetative growth, flowering, yield and mineral contents of pumpkin plants. The results, generally, indicated that increasing N applied rate up to Kg N fed. -1 promoted vegetative growth characters; i.e main stem length plant -1 average branch length, no. of leaves plant -1 , average internode length and shoot fresh weight plant -1 . Moreover, flowering traits; i.e no. of male and female flowers were increased as a result of increasing N up to 60 kg N fed. -1 . However, number of nodes below the first five male and /or female flower decreased. The highest fruit set percentage was obtained from the highest N rate (90 kg N fed. -1 ). In addition, application of 60 kg N fed -1 . was adequate to produce more number of marketable fruits fed. -1 , larger fruit size and higher total yield fed. -1 leaf’s N and K contents, positively and significantly, reflected the amount of N applied level, however, leaf’s P content was not affected. The results showed that the intermediate K level of 72 kg K 2 O fed. -1 , greatly improved some vegetative growth characters as well as fruit yield potential, number of marketable fruits fed. -1 , average fruit weight and total yield fed. -1 . Increasing K level led to a significant increase in leaf’s K and N contents. The interaction effect of N by K was significant on some of the studied traits. Application of 60 kg N fed. -1 in combination with 72 kg K 2 o fed. -1 seemed to be the most efficient and economical combination treatment which assure a better vegetative growth and a higher fruit yield of pumpkin plants.