Floristic Composition, Life Form and Chorology of Plant Life at Al-Saoda, Asir Region, South-Western Saudi Arabia

Asir highlands constitute a major part of south-western Saudi Arabia, and have a temperate climate at elevations above 2500 m a.s.l. This area has a complicated topography. The variations in elevation and topography have resulted in distinctive vegetational zones.  Floristic composition, life form and chorology of plant life at Al-Saoda region south – western Saudi Arabia was studied. Three  major  wadis (sites) were investigated , every site was represented by three localities representing up-stream , mid-stream and down-stream portions of each site. Nine field trips were carried out during 18 months  .Vegetation of  three localities ( Wadi Tahlal , Wadi Al-Moght  and Beni Mazen ) was studied .  Results revealed that the region considers a hot-spot in the Kingdom in term of plant diversity and more diverse compared with other well studied regions in Saudi Arabia. A total of 103 plant species belonging to 40  families were recorded in study area. The major plant families that contributed in the formation of vegetation of the area in question were Asteraceae ( 22.3%) followed by Papilionaceae( 8.7%) ,poaceae,  ( 6.7%), Lamiaceae  ( 5%), Mimosoaceae ( 4%) while other families each was represented by two or one species. Therophytes exhibited the maximum number of species (35%), followed by chaemophytes (32%), hemicryptophytes (15%) and phanerophytes (9.8%), while the least frequent life form class was geophytes and epiphytes .Chorological characteristic of the recorded flora showed that Saharo-Arabian and Sudanian elements constitute % of  the total flora. Keywords: dsfloristic composition , vegetation , Asir region ,chorology , diversit

Chest wall reconstruction still has place in Today’s modern practice:" a tertiary center experience"

Background: The key factor following chest wall resection is the preservation of the stability and integrity of the chest wall to support the respiration and protect the underlying organs. The present study aims to evaluate the use of the available grafts and prosthetic materials at our center in chest wall reconstruction with adherence to the proper surgical techniques, good perioperative and postoperative care to obtain good results. Methods: This is a retrospective single center study that concludes all patients underwent chest wall reconstruction for a variety of defects resulting from resection of tumors, trauma due to primarily firearms or motor car accidents, resection of radio necrotic tissues, infection and dehiscence of median sternotomy wounds after cardiac surgery.  Results: Study population consisted of 30 patients between January 2015and may 2018, among them were 20 male (70%) and 10 female patients (30%), with a median age of 43 ± 16.3 years, resection and reconstruction was performed in 23 cases (15 neoplastic,5 infective and  3 firearm cases) while reconstruction alone was performed in 7 (traumatic flail chest)  cases. Eighteen patients, underwent rib resection with an average 4.18 ± 2.2 ribs (range 2-6). Associated lung resection was performed in 5 patients (27.8 %): diaphragmatic resection was done in 2 cases in addition total sternal resection was performed in 5 cases. Most of the patients (96.7%) had primary healing of their wounds. there was one death (3.3%) in the early postoperative period. The average length of hospital stay for all patients was 8.7 days (range: 5–15). Respiratory complications occurred in three cases in the form of atelectasis and pneumonia at the ipsilateral side of reconstruction. Three cases suffered wound seroma which successfully managed by daily dressing and antibiotic coverage. Conclusions: according to our study and the analysis of similar studies, adequate perioperative preparation of patient undergoing chest wall resection and reconstruction with adherence to effective surgical techniques allowed us to use the available materials at our center for chest wall reconstruction with good and effective results without adding burden in terms of cost on the patient

Kinematics reconstruction in solenoidal spectrometers operated in active target mode

We discuss the reconstruction of low-energy nuclear reaction kinematics from charged-particle tracks in solenoidal spectrometers working in Active Target Time Projection Chamber mode. In this operation mode, reaction products are tracked within the active gas medium of the Active Target with a three dimensional space point cloud. We have inferred the reaction kinematics from the point cloud using an algorithm based on a linear quadratic estimator (Kalman filter). The performance of this algorithm has been evaluated using experimental data from nuclear reactions measured with the Active Target Time Projection Chamber (AT-TPC) detector

Search for {\eta}'(958)-nucleus bound states by (p,d) reaction at GSI and FAIR

The mass of the {\eta}' meson is theoretically expected to be reduced at finite density, which indicates the existence of {\eta}'-nucleus bound states. To investigate these states, we perform missing-mass spectroscopy for the (p, d) reaction near the {\eta}' production threshold. The overview of the experimental situation is given and the current status is discussed.Comment: 6 pages, 3 figures; talk at II Symposium on applied nuclear physics and innovative technologies, September 24th - 27th, 2014, Jagiellonian University, Krak\'ow Poland; to appear in Acta Physica Polonica

Spectroscopy of η′\eta'-nucleus bound states at GSI and FAIR --- very preliminary results and future prospects ---

The possible existence of \eta'-nucleus bound states has been put forward through theoretical and experimental studies. It is strongly related to the \eta' mass at finite density, which is expected to be reduced because of the interplay between the $U_A(1)$ anomaly and partial restoration of chiral symmetry. The investigation of the C(p,d) reaction at GSI and FAIR, as well as an overview of the experimental program at GSI and future plans at FAIR are discussed.Comment: 7 pages, 3 figures; talk at the International Conference on Exotic Atoms and Related Topics (EXA2014), Vienna, Austria, 15-19 September 2014. in Hyperfine Interactions (2015

Neutron quadrupole transition strength in 10^{10}C deduced from the 10^{10}C(α,α′)(\alpha,\alpha') measurement with the MAIKo active target

Elastic and inelastic alpha scatterings on $^{10}$C were measured using a 68-MeV/u radioactive $^{10}$C beam incident on the recently developed MAIKo active target system. The phenomenological effective $\alpha$-$N$ interaction and the point-nucleon density distribution in the ground state were determined from the elastic scattering data. The cross sections of the inelastic alpha scattering were calculated using this interaction and density distribution and were compared with the experiment to determine the neutron quadrupole transition matrix element $M_{n}$ between the ground state and the $2_{1}^{+}$ state at $E_{x} = 3.35$ MeV in $^{10}$C. The deduced neutron transition matrix element is $M_{n} = 6.9\, \pm0.7\, \mathrm{(fit)}\, \pm1.2\, \mathrm{(sys)}$ fm$^{2}$. The ratio of the neutron transition strength to proton transition strength was determined as $M_{n}/M_{p} = 1.05\, \pm0.11\, \mathrm{(fit)}\, \pm0.17\, \mathrm{(sys)}$, which indicates that the quadrupole transition between the ground state and the $2_{1}^{+}$ state in $^{10}$C is less neutron dominant compared to that in $^{16}$C.Comment: 13 pages, 10 figures, 2 tables. The title and conclusion have changed from the previous versio

Neutron quadrupole transition strength in 10C^{10}\mathrm{C} deduced from the ^{10}\mathrm{C}(\ensuremath{\alpha},{\ensuremath{\alpha}}^{\ensuremath{'}}) measurement with the MAIKo active target

Elastic and inelastic alpha scatterings on $^{10}\mathrm{C}$ were measured using a 68-MeV/u radioactive $^{10}\mathrm{C}$ beam incident on the recently developed MAIKo active target system. The phenomenological effective α-N interaction and the point-nucleon density distribution in the ground state were determined from the elastic scattering data. The cross sections of the inelastic alpha scattering were calculated using this interaction and density distribution and were compared with the experiment to determine the neutron quadrupole transition matrix element M_n between the ground state and the 2^+_1 state at E_x = 3.35 MeV in $^{10}\mathrm{C}$. The deduced neutron transition matrix element is M_n = 6.9 ± 0.7(fit) ± 1.2(sys) fm^2. The ratio of the neutron transition strength to proton transition strength was determined as M_n/M_p = 1.05 ± 0.11(fit) ± 0.17(sys), which indicates that the quadrupole transition between the ground state and the 2^+_1 state in $^{10}\mathrm{C}$ is less neutron dominant compared to that in $^{16}\mathrm{C}$.T. Furuno, T. Kawabata, S. Adachi, Y. Ayyad, Y. Kanada-En'yo, Y. Fujikawa, K. Inaba, M. Murata, H. J. Ong, M. Sferrazza, Y. Takahashi, T. Takeda, I. Tanihata, D. T. Tran, and M. Tsumura, "Neutron quadrupole transition strength in $^{10}\mathrm{C}$ deduced from the ^{10}\mathrm{C}(\ensuremath{\alpha},{\ensuremath{\alpha}}^{\ensuremath{'}}) measurement with the MAIKo active target," Physical Review C, 100, 054322, 2019. https://doi.org/10.1103/PhysRevC.100.054322