A thermophilic Bacillus strain ASU7 was isolated from soil sample collected from Assiut governorate in Upper Egypt on latex rubber-containing medium at 45 °C. Genetically, the 16S bacterial ribosomal RNA gene of the strain ASU7 was amplified by the polymerase chain reaction (PCR) and sequenced. The sequence of the PCR product was compared with known 16S rRNA gene sequences in the GenBank database. Based on phylogenetic analyses, strain ASU7 was identified as Bacillus amyloliquefaciens. The strain was able to utilize Ficus elastica rubber latex as a sole source for carbon and energy. The ability for degradation was determined by measuring the increase in protein content of bacterium (mg/g dry wt), reduction in molecular weight (g/mol), and inherent viscosity (dl/g) of the latex. Moreover, the degradation was also confirmed by observing the growth of bacterium and formation of aldehyde or keto group using scanning electron microscopy (SEM) and shiff's reagent, respectively.

2-Benzoyloxycinnamaldehyde (BCA) is a promising antitumor agent which induces cancer cells apoptosis
via reactive oxygen species (ROS) generation. BCA shows more effective antiproliferation in MDAMB-
435 than in MCF-7 breast cancer cells. DJ-1 has been known to protect cells against oxidative stress as
an antioxidant because of its cysteine residues sensitive to oxidative stress. In the present study, we evaluated
the mechanism of DJ-1 for cell protection from oxidative stress after BCA treatment in MCF-7 cell. BCA
upregulates the expression of DJ-1 in MCF-7 cells. However, DJ-1 expression decreased continuously for 24 h
after BCA treatment in MDA-MB-435 cells. DJ-1 knockdown sensitized MCF-7 cells to BCA, on the contrary,
DJ-1 overexpression induced MDA-MB-435 cells less sensitive to BCA. Confocal microscopic observation
showed that only in MCF-7 cells BCA increased the overlapped signal between mitochondria and DJ-1
protein. Mitochondrial membrane potential (MMP) was decreased in MDA-MB-435 cells by BCA, and DJ-1
overexpression inhibited BCA-induced MMP decrease in these cells. On the contrary, DJ-1 knockdown in
MCF-7 induced MMP perturbation by BCA. These findings suggest that DJ-1 upregulation protects MCF-7
cells from BCA via inhibiting mitochondrial damage.

We investigate the death of entanglement and the purity loss of a two qubits–field system in the
dispersive regime with a reservoir. For an alternative entanglement measure, we calculate the negativity
of the eigenvalues of a partially transposed density matrix and compare it with the mutual entropy. A
new measure related to the mutual entropy, namely, the index of entropy, is proposed to measure the
degree of entanglement, and this agrees well with the negativity. We found that the entanglement has
a strong sensitivity to the phase damping. The asymptotic behavior of the field states, the two qubits,
and the total system fall into a mixed state. We treat the phenomena of death of entanglement and
purity as they arise from the effect of phase damping.

Quantumness of the correlations between two qubits, coupled to a cavity field
whenever the system is open or closed, is investigated when sudden death (or birth) of the
entanglement occurs. It is found that quantum correlation not exists only in the entangled
state. It’s found that the dephasing parameters and the purity of the initial states play an
important role in the dynamics behaviors of the quantum correlations, including entanglement.
Quantumness of the correlations and entanglement, due to dephasing of the cavity, are
damped until the same their values which are contained in their initial states.

The analytical description of a superconducting qubit strongly coupled to a resonator with a thermal reservoir
is given. Link between nonlocality and entanglement is investigated, they can be manipulated and controlled
by any change in the thermal reservoir parameters. According to the Peres conjecture: if the state has
negative partial transposition, then the violation of Bell's inequality occurs. Under the effect of thermal noise,
the negative partial transposition is transformed to positive. Therefore, the state shows the phenomenon of
sudden death of both entanglement and nonlocality.

The quantum correlation (QC) of two qubits coupled to a thermal field is investigated based on
measurement-induced disturbance. It is found that QC does not exist only in the entangled
state. Due to the thermal parameter, QC is inhibited from vanishing and the phenomenon of
the death and birth of entanglement occurs. Due to the field-mode structure, QC is equal to
zero for separated qubits, whereas for a maximally entangled state, it has a periodic
asymptotic behavior which does not vanish. QC and entanglement differ when the qubit state
is initially in the separated or entangled state.

This paper mainly studies the singularities of Gauss Map of pedal hypersurface in R
n +1
. It contains the
geometry of pedal hypersurfaces in R
n +1
and their Gauss maps. The singularity of Gauss map of the pedal
hypersurface using the rank of jacobian matrix of Gauss map is given and classified. The sets of singularities and its
graphs under the Gauss map are plotted.

This paper mainly studies the Singularities of smooth mapping. The singularities of the families of Gauss
maps corresponding to the family of mappings are studied and the shape of these families and their singularities
using mathematica program are illustrated and plotted.

We present algorithms for computing the differential geometry properties of Frenet apparatus (t,n,b1,b2,κ1,κ2,κ3) of intersectioncurves of implicit–parametric–parametric and implicit–implicit–parametric hypersurfaces in R4, for transversal intersection. Some examples are given and plotted.

A brachiopod fauna of late Bathonian age recovered from the Kehailia Formation from Gebel Engabashi in northern Sinai consists of six species (two rhynchonellids and four terebratulids) referred to six genera, of which one genus and two species are new: Globirhynchia sphaerica (Cooper, 1989) new combination, Daghanirhynchia angulocostata Cooper, 1989, Ectyphoria sinaiensis new species, Cooperithyris circularis new genus and species, and new material: Avonothyris species A, and Ptyctothyris species A. The brachiopods described herein comprise a fauna located at the northern part of the Indo-African Faunal Realm within the Jurassic Ethiopian Province. They extend the The geographic distribution of those taxa that show great affinity with the Jurassic brachiopod fauna of Saudi Arabia described by cooper (1989). Differentiation of the endemic faunas that is so characteristic of many of these Ethiopian province faunas is becoming more well-defined