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Search Results: 1 - 10 of 44 matches for " MAMTIMIN Sulayman "
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Pylaisia steerei (Ando et Higuchi) Ignatov (Musci:Hypnaceae) ,A New Addition to the Bryoflora of China

MAMTIMIN Sulayman,

植物科学学报 , 2006,
Abstract: In the past several years,the author studied the bryoflora of Xinjiang,Northwest China and increased a series of new records there.Pylaisia steerei(Ando et Higuchi) Ignatov,as a new addition to the Flora Bryophytorum Sinicorum was described and illustrated.
A new recorded species of PhyscomitriumBrid. (Funariaceae) from Xinjiang——Physcomitrium sphaericum (Ludw.) Fürnr.

,ZHANG Longfeng,MARIPAT Yusup,ATIGUL Molla,MAMTIMIN Sulayman

- , 2018,
Abstract: 该文报道了葫芦藓科(Funariaceae)立碗藓属一新疆新记录种—立碗藓[Physcomitrium sphaericum (Ludw.) Fürnr.].通过光学显微镜和扫描电子显微镜对植株体、叶片、茎、孢蒴、孢子等重要结构进行拍照,并对其特征进行描述.
Bryoflora and Species Diversity in Kanas Natural Reserve,Xinjiang

Mamtimin Sulayman,GONG Zuo-Shan,Anwar Abdurehim,Rizwangul Eziz,Dilnur Anwar,

植物科学学报 , 2010,
Abstract: 从1995~2009年,作者对新疆喀纳斯自然保护区藓类植物进行了全面的调查、采集、鉴定,分析研究.结果表明,该自然保护区藓类植物共有37科113属253种(含1变种),优势科主要体现寒、温带地区分布类型,该区藓类植物生境的多样性可以从物种多样性,如曲尾藓科、木灵藓科、泥炭藓科、紫萼藓科、丛藓科等的广泛分布反映出来.通过与该区相邻的6个地区的物种丰富度系数比较,该自然保护区综合系数Si排第三位,说明此区藓类植物物种多样性丰富,这与本区的水分条件有很大关系.藓类植物区系成分以北温带成分为绝对优势,占总种数的83.33%;东亚成分占总种数的5.10%;东亚-北美成分占总种数的4.17%,各区系成分交汇.主成分分析和聚类分析表明,喀纳斯自然保护区藓类植物区系与新疆东部天山、内蒙古大青山、吉林长白山、河北木兰围场藓类植物区系关系较接近,与贵州梵净山、云南鸡足山藓类植物区系关系疏远,体现了我国北方藓类植物分布特征.
Augmented Lagrangian Genetic Algorithm Based Decentralized Control Configuration Design for Fluid Catalytic Cracking Units  [PDF]
Dauda Olurotimi Araromi, Kazzem Kolapo Salam, Aminah Abolore Sulayman
Advances in Chemical Engineering and Science (ACES) , 2016, DOI: 10.4236/aces.2016.61001
Abstract: In this work, three decentralized control configuration designs—independent, sequential and simultaneous designs—were used in multivariable feedback configurations for PI control of the riser and regenerator temperatures of FCCU in order to compare their performances. Control design was formulated as optimization problem to minimize infinity norm of weighted sensitivity functions subject to μ-interaction measure bound on diagonal complementary functions of the closed loop system. The optimization problem was solved using augmented Lagrangian genetic algorithm. Simulation results show that simultaneous and independent designs give good response with less overshoot and with no oscillation. Bound on μ-interaction measure is satisfied for both designs meaning that their nominal stabilities are guaranteed; however, it is marginal for simultaneous design. Simultaneous design outperforms independent design in term of robust performance while independent design gives the best performance in terms of robust stability. Sequential design gives the worst performance out of the three designs.
Effect of Delayed versus Early Cord Clamping on Neonatal Outcomes and Iron Status at 4 Months  [PDF]
Musa O. Busarira, Entesar Alasbaly, Maryam Sulayman Mbark
Open Journal of Obstetrics and Gynecology (OJOG) , 2019, DOI: 10.4236/ojog.2019.92024
Abstract: Background: The optimal timing of umbilical cord clamping has been debated in the scientific literature for over a century. Early clamping of the umbilical cord is widely practised as part of the management of labour. Early clamping of the cord was one of the first routine medical interventions in labour. Its place in modern births was guaranteed by its incorporation into the triad of interventions that make up the active management of the third stage of labour. Babies who have immediate cord clamping have also been shown to be more likely to be anaemic, have decreased fine motor skills, and have decreased social skills during their first few years of age. Delayed umbilical cord clamping appears to have clear benefit for term infants. Delayed umbilical cord clamping increases hemoglobin levels at birth and improves iron stores in the first few months of life, which improve the developmental outcomes. There is growing evidence that delayed cord clamping is beneficial and can improve the infant’s iron status for up to 6 months after birth. For the first few minutes after birth, there is still circulation from the placenta to the infant. Waiting to clamp the umbilical cord for 2 - 3 min, or until cord pulsations cease, allows a physiological transfer of placental blood to the infant (placental transfusion), the majority of which occurs within 3 min. This placental transfusion provides sufficient iron reserves for the first 6 - 8 months of life, preventing or delaying the development of iron deficiency until other interventions. WHO’s findings suggest that late cord clamping (one to three minutes after delivery or longer) is recommended for all births. Aim of the study: 1) To evaluate the benefit of delayed cord clamping on the infants health status. 2) To assess hemoglobin, iron and ferritin at birth and at 4 months of age in infants who underwent early cord
Huge Broad Ligament Leiomyoma: A Case Report  [PDF]
Fatima Bakari, Hajaratu U. Sulayman, Solomon Avidime, Nkeirukah Ameh, Adebiyi G. Adesiyun
Case Reports in Clinical Medicine (CRCM) , 2015, DOI: 10.4236/crcm.2015.42013
The broad ligament is the commonest extra uterine site for the occurrence of leiomyoma but with a very low incidence rate. Because of its overall low incidence rate, it poses both clinical and radiological difficulty in differentiating with an ovarian tumour. We report a case of a 31-year-old unmarried nullipara (para 0 + 0) who presented with 12-month history of progressive abdominal swelling, three-month history of pelvic pain and one-month history of prolonged heavy menstrual flow. Examination of the abdomen showed a 36-week-size mass which was multi-lobulated, firm, non tender and slightly mobile extending to the xyphisternum. On abdominal ultrasonography scan, the uterus was deviated to the contra lateral side with a huge, irregular mass measuring 24 × 18 cm posterior to the uterus. She had laparotomy and four fibroid seedlings were removed. The largest was a broad ligament myoma which measured 24 × 17 × 12 cm and weighed 3883 g.
Soil biogenic emissions of nitric oxide from a semi-arid savanna in South Africa
G. T. Feig, B. Mamtimin,F. X. Meixner
Biogeosciences (BG) & Discussions (BGD) , 2008,
Abstract: Soils of arid and semi-arid ecosystems are important biogenic sources of atmospheric nitric oxide (NO), however, there is still a shortage of measurements from these systems. Here we present the results of a laboratory study of the biogenic emission of NO from four different landscape positions of the Kruger National Park (KNP), a large conservation area in a semi-arid region of South Africa. Results show that the highest net potential NO fluxes come from the low lying (footslope) landscape regions, which have the largest nitrogen stocks and highest rates of nitrogen input into the soil. Net potential NO fluxes from midslope and crest regions were considerably lower. The maximum release of NO occurred at fairly low soil moisture contents of 10%–20% water filled pore space. Using soil moisture and temperature data obtained in situ at the Kruger National Park flux tower site, net potential NO fluxes obtained in the laboratory were converted to field fluxes for each of the four landscape positions for the period 2003 to 2005. The highest field NO flux is from footslope positions, during each of these years and emissions ranged from 1.5–8.5 kg ha a (in terms of mass of nitrogen). Remote sensing and Geographic Information Systems techniques were used to up-scale field NO fluxes on a regional basis indicating that the highest emissions occurred from the midslope positions, due to their large geographical extent in the considered research area. Emissions for the KNP Skukuza land type (56 000 ha) ranged from 20×103 kg in 2004 to 34×103 kg in 2003. The importance of landscape characteristics in the determination of regional biogenic NO soil emission is emphasized.
Analyses of temperature and humidity profiles and heat balance of the surface boundary-layer in the hinterland of the Taklimakan Desert
WenShou Wei,MinZhong Wang,Qing He,JiaQiang Lei,Mamtimin Ali
Chinese Science Bulletin , 2008, DOI: 10.1007/s11434-008-6002-7
Abstract: The daily variation regularities of micro-meteorological features, such as the surface layer temperature and humidity profiles of the inner desert in summer, the temperature of sand bed, the radiation of the earth’s surface and the heat balance, were analyzed by combination method and logarithm regression according to the data obtained from the Atmospheric Environmental Observation Station of Taklimakan Desert in July–August of 2006 and 2007. It has been shown that temperature inversion occurred near the surface layer at night in summer, the temperature increased with the height within a certain altitude range, and the reverse was true during the daytime. The ground surface radiation balance of the Taklimakan Desert was mainly positive; other radiation components (the global radiation, the reflective radiation, the ground upward long wave radiation and the net radiation) exhibited daily variation characteristics evidently and showed normal diurnal cycle, except for the downward atmospheric long-wave radiation. The heat exchange of the surface layer of the desert was dominated by turbulence sensible heat, and only a small portion of heat was transferred to the atmospheric surface layer in the form of latent heat. The surface sensible heat and latent heat changed with the increase and decrease of sun elevation angle, with maximum of the latent heat appearing in wee hours and the peak value of the sensible heat appearing at noon. Observation and analysis showed that heating effect of the underlying surface of the desert was great on the aerosphere; the surface was a high heat source during the day and became a weak cold source at night.
Improving the CoLM in Taklimakan Desert Hinterland with Accurate Key Parameters and an Appropriate Parameterization Scheme

LIU Yongqiang,HE Qing,ZHANG Hongsheng,Ali MAMTIMIN,

大气科学进展 , 2012,
Abstract: Improving and validating land surface models based on integrated observations in deserts is one of the challenges in land modeling. Particularly, key parameters and parameterization schemes in desert regions need to be evaluated \textit{in-situ} to improve the models. In this study, we calibrated the land-surface key parameters and evaluated several formulations or schemes for thermal roughness length (z0h) in the common land model (CoLM). Our parameter calibration and scheme evaluation were based on the observed data during a torrid summer (29 July to 11 September 2009) over the Taklimakan Desert hinterland. First, the importance of the key parameters in the experiment was evaluated based on their physics principles and the significance of these key parameters were further validated using sensitivity test. Second, difference schemes (or physics-based formulas) of z0h were adopted to simulate the variations of energy-related variables (e.g., sensible heat flux and surface skin temperature) and the simulated variations were then compared with the observed data. Third, the z0h scheme that performed best (i.e., Y07) was then selected to replace the defaulted one (i.e., Z98); the revised scheme and the superiority of Y07 over Z98 was further demonstrated by comparing the simulated results with the observed data. Admittedly, the revised model did a relatively poor job of simulating the diurnal variations of surface soil heat flux, and nighttime soil temperature was also underestimated, calling for further improvement of the model for desert regions.
Use of laboratory and remote sensing techniques to estimate vegetation patch scale emissions of nitric oxide from an arid Kalahari savanna
G. T. Feig,B. Mamtimin,F. X. Meixner
Biogeosciences Discussions , 2008,
Abstract: The biogenic emission of nitric oxide (NO) from the soil has an important impact on a number of environmental issues, such as the production of tropospheric ozone, the cycle of the hydroxyl radical (OH) and the production of NO. In this study we collected soils from four differing vegetation patch types (Pan, Annual Grassland, Perennial Grassland and Bush Encroached) in an arid savanna ecosystem in the Kalahari (Botswana). A laboratory incubation technique was used to determine the net potential NO flux from the soils as a function of the soil moisture and the soil temperature. The net potential NO emissions were up-scaled for the year 2006 and a region (185 km×185 km) of the southern Kalahari. For that we used (a) the net potential NO emissions measured in the laboratory, (b) the vegetation patch distribution obtained from Landsat NDVI measurements, (c) estimated soil moisture contents obtained from ENVISAT ASAR measurements and (d) the soil surface temperature estimated using MODIS MOD11A2 8 day land surface temperature measurements. Differences in the net potential NO fluxes between vegetation patches occur and range from 0.27 ng m 2 s 1 in the Pan patches to 2.95 ng m 2 s 1 in the Perennial Grassland patches. Up-scaling the net potential NO fluxes with the satellite derived soil moisture and temperature data gave NO fluxes of up to 323 g ha 1 month 1, where the highest up-scaled NO fluxes occurred in the Perennial Grassland patches, and the lowest in the Pan patches. A marked seasonal pattern was observed where the highest fluxes occurred in the austral summer months (January and February) while the minimum fluxes occurred in the austral winter months (June and July), and were less than 1.8 g ha 1 month 1. Over the course of the year the mean NO emission for the up-scaled region was 0.54 kg ha 1 yr 1, which accounts for a loss of up to 7.4% of the nitrogen (N) input to the region through atmospheric deposition and biological N fixation. The biogenic emission of NO from the soil is therefore an important mechanism of N loss from this arid savanna ecosystem and has the potential to play an important role in the production of tropospheric ozone and the OH cycle.
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