Papers by Soliman Abdalla
Nanoscale Research Letters, 2015
Carbon nanotubes have been of great interest because of their simplicity and ease of synthesis. T... more Carbon nanotubes have been of great interest because of their simplicity and ease of synthesis. The novel properties of nanostructured carbon nanotubes such as high surface area, good stiffness, and resilience have been explored in many engineering applications. Research on carbon nanotubes have shown the application in the field of energy storage, hydrogen storage, electrochemical supercapacitor, field-emitting devices, transistors, nanoprobes and sensors, composite material, templates, etc. For commercial applications, large quantities and high purity of carbon nanotubes are needed. Different types of carbon nanotubes can be synthesized in various ways. The most common techniques currently practiced are arc discharge, laser ablation, and chemical vapor deposition and flame synthesis. The purification of CNTs is carried out using various techniques mainly oxidation, acid treatment, annealing, sonication, filtering chemical functionalization, etc. However, high-purity purification techniques still have to be developed. Real applications are still under development. This paper addresses the current research on the challenges that are associated with synthesis methods, purification methods, and dispersion and toxicity of CNTs within the scope of different engineering applications, energy, and environmental impact.
viXra, 2017
We present a new quantum algorithm. It determines the property of a function. It is $f(x)=f(-x)$.... more We present a new quantum algorithm. It determines the property of a function. It is $f(x)=f(-x)$. How fast can we succeed? The quantum algorithm does not use the Hadamard transformation. All we need is of evaluating $|\overbrace{0,0,...,1}^N\rangle$. And we can know the global property, that is, we can realize $f(x)=f(-x)$ for numbers. Our quantum algorithm overcomes a classical counterpart by a factor of $O(2^N)$.
viXra, 2017
We present a method of fast determining a homogeneous linear function $f(x):= s.x=s_1x_1+ s_2x_2+... more We present a method of fast determining a homogeneous linear function $f(x):= s.x=s_1x_1+ s_2x_2+\dots+s_Nx_N$ from $\{0,1,\dots,d-1\}^N$ with coefficients $s=(s_1,\dots,s_N)$. Here $x=(x_1,\dots,x_N)$ and $x_j\in{\bf R}$. Given the interpolation values $(f(1), f(2),...,f(N))=\vec{y}$, we shall determine the unknown coefficients $s = (s_1(\vec{y}),\dots, s_N(\vec{y}))$ of the linear function, simultaneously. The speed of determining the values is shown to outperform the classical case by a factor of $N$. Our method is based on the generalized Bernstein-Vazirani algorithm \cite{BVG} to qudit systems \cite{BVD}.
Frontiers in Bioengineering and Biotechnology, 2020
Skeletal defects resulting from trauma and disease represent a major clinical problem worldwide e... more Skeletal defects resulting from trauma and disease represent a major clinical problem worldwide exacerbated further by global population growth and an increasing number of elderly people. As treatment options are limited, bone tissue engineering opens the doors to start an infinite amount of tissue/bone biomaterials having excellent therapeutic potential for the management of clinical cases characterized by severe bone loss. Bone engineering relies on the use of compliant biomaterial scaffolds, osteocompetent cells, and biologically active agents. In fact, we are interested to use a new natural material, tannin. Among other materials, porous tannin spray-dried powder (PTSDP) has been approved for human use. We use PTSDP as reconstructive materials with low cost, biocompatibility, and potential ability to be replaced by bone in vivo. In this study, macro PTSDP scaffolds with defined geometry, porosity, and mechanical properties are manufactured using a combination of casting technology and porogen leaching, by mixing PTSDP and hydroxyapatite Ca10(PO4)6(OH)2 with polyethylene glycol macroparticles. Our results show that the scaffolds developed in this work support attachment, long-term viability, and osteogenic differentiation of humaninduced pluripotent stem cell-derived mesenchymal progenitors. The combination of select macroporous PTSDP scaffolds with patient-specific osteocompetent cells offers new opportunities to grow autologous bone grafts with enhanced clinical potential for complex skeletal reconstructions.
International Journal of Theoretical Physics, 2017
An interpretation of quantum mechanics is discussed. It is assumed that quantum is energy. An alg... more An interpretation of quantum mechanics is discussed. It is assumed that quantum is energy. An algorithm by means of the energy interpretation is discussed. An algorithm, based on the energy interpretation, for fast determining a homogeneous linear function f (x) := s.x = s 1 x 1 + s 2 x 2 + • • • + s N x N is proposed. Here x = (x 1 ,. .. , x N), x j ∈ R and the coefficients s = (s 1 ,. .. , s N), s j ∈ N. Given the interpolation values (f (1), f (2), ..., f (N)) = y, the unknown coefficients s = (s 1 (y),. .. , s N (y)) of the linear function shall be determined, simultaneously. The speed of determining the values is shown to outperform the classical case by a factor of N. Our method is based on the generalized Bernstein-Vazirani algorithm to qudit systems. Next, by using M parallel quantum systems, M homogeneous linear functions are determined, simultaneously. The speed of obtaining the set of M homogeneous linear functions is shown to outperform the classical case by a factor of N × M.
Materials Chemistry and Physics, 2019
This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.
International Journal of Theoretical Physics, 2018
We discuss a character of quantum algorithms. In fact, all of them determine the property of a ce... more We discuss a character of quantum algorithms. In fact, all of them determine the property of a certain function. The function under study must have the property f (x) = f (−x) when f (x) = 0.
The Journal of Adhesion, 2019
Wheat gluten protein hydrolysate was used as a biomass feedstock to prepare environmentally frien... more Wheat gluten protein hydrolysate was used as a biomass feedstock to prepare environmentally friendly protein-based adhesives, with hydrolyzed wheat protein as control. Glutaraldehyde was use to modify it to obtain a glutaradehyde-wheat protein (GP) adhesive. Polyethylenimine (PEI) was also used as a crosslinking agent. Plywood has been prepared and tested, the performances of it used to measure the wheat gluten protein hydrolysate adhesive bonding performance. Differential scanning calorimetry (DSC) and thermomechanical analysis (TMA) were used to analyze the adhesive thermal properties and the microstructures of the cured adhesives by scanning electron microscopy (SEM). The results shows that modification by glutaraldehyde can effectively improve the bonding performance of wheat protein adhesives, the plywood bonded strength having been improved by its addition. The effect of PEI as a crosslinking agent became evident. It can greatly improve the bonding properties of glutaraldehyde-modified wheat protein adhesives. TMA analysis indicates that the glutaraldehyde-modified GP adhesive has a higher storage modulus than the unmodified one. The modulus of the adhesive increased after adding the PEI cross-linking agent.
International Journal of Theoretical Physics, 2018
In the short contribution, we consider inequalities of confirming genuine multipartite entangleme... more In the short contribution, we consider inequalities of confirming genuine multipartite entanglement. We have a better entanglement witness for a particular mixed state to test genuine multipartite entanglement. Our physical situation is that we measure Pauli observables σ x , σ y , and σ z per side. If the reduction factor is greater than 0.4, then we can confirm the measured quantum state is genuine multipartite entangled experimentally.
International Journal of Theoretical Physics, 2018
We present a new method of more speedily calculating a multiplication by using the generalized Be... more We present a new method of more speedily calculating a multiplication by using the generalized Bernstein-Vazirani algorithm and many parallel quantum systems. Given the set of real values {a 1 , a 2 , a 3 ,. .. , a N } and a function g : R → {0, 1}, we shall determine the following values {g(a 1), g(a 2), g(a 3),. .. , g(a N)} simultaneously. The speed of determining the values is shown to outperform the classical case by a factor of N. Next, we consider it as a number in binary representation; M 1 = (g(a 1), g(a 2), g(a 3),. .. , g(a N)). By using M parallel quantum systems, we have M numbers in binary representation, simultaneously. The speed of obtaining the M numbers is shown to outperform the classical case by a factor of M. Finally, we calculate the product; M 1 × M 2 × • • • × M M. The speed of obtaining the product is shown to outperform the classical case by a factor of N × M.
Multipartite quantum correlations in the extended J1–J2 Heisenberg model
International Journal of Modern Physics B, 2017
Multipartite entanglement and the maximum violation of Bell inequalities are studied in finite cl... more Multipartite entanglement and the maximum violation of Bell inequalities are studied in finite clusters of spins in an extended J1–J2 Heisenberg model at zero temperature. The ensuing highly frustrated states will unveil a rich structure for different values of the corresponding spin–spin interaction strengths. The interplay between nearest-neighbors, next-nearest neighbors and further couplings will be explored using multipartite correlations. The model is relevant to certain quantum annealing computation architectures where an all-to-all connectivity is considered.
Polymers, 2017
The reaction of condensation and cross-linking of desulfurized kraft lignin with triethyl phospha... more The reaction of condensation and cross-linking of desulfurized kraft lignin with triethyl phosphate (TEP) was explored. Catechol, a simple model of the aromatic ring of lignin, and glycerol, a model compound of the aliphatic hydroyl groups of the side chain of lignin, were employed under similar reaction conditions. Solid state cross-polarisation/magic-angle spinning (CP-MAS) 13 C NMR and matrix assisted laser desorption ionization time-of-flight (MALDI-TOF) spectroscopy studies showed that polycondensation occurs on phenolic hydroxyl groups of lignin, as well as on aliphatic hydroxyls groups of its side chain. The reactions appear to be favoured by higher temperatures and in the presence of ammonia. Preliminary adhesion tests on wood shown good hydrophobicity properties of the surface treated with lignin-TEP-based resin. Initial application tests carried out at high temperature demonstrated as good performance as metallic coating.
Journal of Renewable Materials, 2017
The reaction of a desulphurized kraft lignin with hexamethylene diamine as a model of a polyamine... more The reaction of a desulphurized kraft lignin with hexamethylene diamine as a model of a polyamine has been investigated. For this purpose, guaiacol was also used as a lignin model compound and treated under similar conditions. Solid state CP-MAS 13 C NMR, FTIR and MALDI-TOF spectroscopy studies revealed that polycondensation compounds leading to resins were obtained by the reaction of the amines with the phenolic and aliphatic hydroxy groups of lignin. Simultaneously a second reaction leading to the formation of ionic bonds between the same groups occurred. These new reactions have been clearly shown to involve several phenolic and alcohol hydroxyl groups, as well as lignin units oligomerization, to form hardened resins.
Annales de Physique, 1960
Industrial Crops and Products, 2016
New formaldehyde-free Quebracho tannin foams were developed for horticultural/hydroponics and flo... more New formaldehyde-free Quebracho tannin foams were developed for horticultural/hydroponics and floral applications. These foams included in their composition a wetting agent and at least one compound able to neutralize the residual acidity derived from acid catalyst. Their densities were between 0.048 and 0.066 g/cm 3 and compression strength, between 0.07 and 0.09 MPa. Scanning electron microscopy (SEM) images showed open porosity and average cell size of 125-250 m. Water absorption peaked at 98% (vol) while residual pH value was 5. The new tannin foams do not result to be phytotoxic and are apt to the conservation of fresh cut flowers and as support matrices for horticulture and hydroponics. They have shown performances comparable or superior to commercial synthetic phenolic floral foam used as reference.
Nanoscale Research Letters, 2017
Background: Deoxyribonucleic acid (DNA) is one of the best candidate materials for various device... more Background: Deoxyribonucleic acid (DNA) is one of the best candidate materials for various device applications such as in electrodes for rechargeable batteries, biosensors, molecular electronics, medical-and biomedicalapplications etc. Hence, it is worthwhile to examine the mechanism of charge transport in the DNA molecule, however, still a question without a clear answer is DNA a molecular conducting material (wire), semiconductor, or insulator? The answer, after the published data, is still ambiguous without any confirmed and clear scientific answer. DNA is found to be always surrounded with different electric charges, ions, and dipoles. These surrounding charges and electric barrier(s) due to metallic electrodes (as environmental factors (EFs)) play a substantial role when measuring the electrical conductivity through λ-double helix (DNA) molecule suspended between metallic electrodes. We found that strong frequency dependence of AC-complex conductivity comes from the electrical conduction of EFs. This leads to superimposing serious incorrect experimental data to measured ones. Methods: At 1 MHz, we carried out a first control experiment on electrical conductivity with and without the presence of DNA molecule. If there are possible electrical conduction due to stray ions and contribution of substrate, we will detected them. This control experiment revealed that there is an important role played by the environmental-charges around DNA molecule and any experiment should consider this role. Results and discussion: We have succeeded to measure both electrical conductivity due to EFs (σ ENV) and electrical conductivity due to DNA molecule (σ DNA) independently by carrying the measurements at different DNA-lengths and subtracting the data. We carried out measurements as a function of frequency (f) and temperature (T) in the ranges 0.1 Hz < f < 1 MHz and 288 K < T < 343 K. The measured conductivity (σ MES) portrays a metal-like behavior at high frequencies near 1 MHz. However, we found that σ DNA was far from this behavior because the conduction due to EFs superimposes σ DNA , in particular at low frequencies. By measuring the electrical conductivity at different lengths: 40, 60, 80, and 100 nm, we have succeeded not only to separate the electrical conduction of the DNA molecule from all EFs effects that surround the molecule, but also to present accurate values of σ DNA and the dielectric constant of the molecule ε' DNA as a function of temperature and frequency. Furthermore, in order to explain these data, we present a model describing the electrical conduction through DNA molecule: DNA is a classical semiconductor with charges, dipoles and ions that result in creation of localized energy-states (LESs) in the extended bands and in the energy gap of the DNA molecule.
Journal of Renewable and Sustainable Energy, 2017
Nano-fluids are described as a relatively new kind of colloidal solution with a particle size sma... more Nano-fluids are described as a relatively new kind of colloidal solution with a particle size smaller than one billionth of a meter (1-100 nm) suspended in the base fluid so as to enhance the thermo-physical properties, which makes them an obvious choice for use in a number of commercial applications, including engineering, medical sciences, biotechnology, agriculture technology, and transportation. With the advancement in nanotechnology during the past few years, the scientific community focuses on improvising the combustion behavior, stability aspects, various engine performance parameters, and emission characteristics of conventional diesel engines using nano-particle laden diesel biodiesel fuel blends. Most recently, a few experimental works on the above issues using nano-sized metallic, non-metallic, organic, and mixed particles in the base liquid fuel for diesel engines have appeared in the open literature. The results obtained are very encouraging due to multifold enhancement in the thermo-physical and chemical properties of modified fuels, such as high surface to volume ratio, high reactive medium for combustion, enhanced heat and mass transport properties due to high thermal conductivity, and improvement in the flash point, fire point, pour point, etc., depending on the type of nano-particles used and their particle size and concentration with base fuels. Despite having all superiorities, somewhat unclear and contradictory results are found in the literature. Further, the experimental results of different researchers are not generalized so far as to reach a common consensus about this new approach of fuel modification. Keeping all these facts in mind, a serious attempt has been made to summarize important published work on combustion and stability aspects of nano-particle laden diesel, biodiesel fuels, and their blends and their overall effects on fuel and engine characteristics with the objective to provide a pathway to conduct further research in this area for utilizing the maximum potential of nanoparticle fuel emulsion technology and to provide a promising future fuel for diesel engines.
International Journal of Modern Physics B, 2016
A controlled electrical breakdown is used to produce efficient nanopore (NP) sensors. This phenom... more A controlled electrical breakdown is used to produce efficient nanopore (NP) sensors. This phenomenon can be used to precisely fabricate these nanopore (NP) sensors through the membranes of the polydimethylsiloxane microarrays. This can be carried out, when localizing the electrical potential through a suitable microfluidic channel. Organic molecules, and other different protein-molecules, can be easily and precisely detected using this procedure referred to as controlled electrical breakdown technique.
Frontiers of Physics, 2017
We study the nonlocality dynamics for two models of atoms in cavity quantum electrodynamics (QED)... more We study the nonlocality dynamics for two models of atoms in cavity quantum electrodynamics (QED); the first model contains atoms in a single cavity undergoing nearest-neighbor interactions with no initial correlation, and the second contains atoms confined in n different and noninteracting cavities, all of which were initially prepared in a maximally correlated state of n qubits corresponding to the atomic degrees of freedom. The nonlocality evolution of the states in the second model shows that the corresponding maximal violation of a multipartite Bell inequality exhibits revivals at precise times, defining, nonlocality sudden deaths and nonlocality sudden rebirths, in analogy with entanglement. These quantum correlations are provided analytically for the second model to make the study more thorough. Differences in the first model regarding whether the array of atoms inside the cavity is arranged in a periodic or open fashion are crucial to the generation or redistribution of quantum correlations. This contribution paves the way to using the nonlocality multipartite correlation measure for describing the collective complex behavior displayed by slightly interacting cavity QED arrays.
Chemical Physics, 2017
We have prepared films of polymer nano-composite (PNC) of poly [vinylidene-fluoride] (PVDF) and b... more We have prepared films of polymer nano-composite (PNC) of poly [vinylidene-fluoride] (PVDF) and bio resin natural tannin (BRNT) nanoparticles. The a and c electro-active phases were detected, and the addition of BRNT drastically increases the formation of the a-phase. Addition of BRNT produces up to 98% of electro-active phases. Robust electrostatic interactions arise between charges at the BRNT-surfaces, and differences in electron affinity between CH2 and CF2 groups created dielectric dipoles. The addition of BRNT has not only enhanced the formation of the electrically active phases but also makes each dipole in the phase has its specific characteristics for example its own relaxation time. The AC-electrical permittivity showed that the dielectric constant of 10%wt-BRNT nanoparticles in PVDF has a value 44 e 0 , which is four times more than the dielectric constant of the as-prepared PVDF films. These data show the importance of these polymers as easy, flexible, and durable energy storage materials.
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Papers by Soliman Abdalla