A Note on Separable Nonlinear Least Squares Problem

Separable nonlinear least squares (SNLS)problem is a special class of nonlinear least squares (NLS)problems, whose objective function is a mixture of linear and nonlinear functions. It has many applications in many different areas, especially in Operations Research and Computer Sciences. They are difficult to solve with the infinite-norm metric. In this paper, we give a short note on the separable nonlinear least squares problem, unseparated scheme for NLS, and propose an algorithm for solving mixed linear-nonlinear minimization problem, method of which results in solving a series of least squares separable problems.Comment: 3 pages; IEEE, 2011 International Conference on Future Computer Sciences and Application (ICFCSA 2011), Jun. 18- 19, 2011, Hong Kon

Intracranial Hemorrhage Due to Secondary Hypertension from Intracranial Large Vessel Occlusion

Simultaneous hemorrhagic and ischemic strokes have been previously reported in the literature. Typically, these occur in patients secondary to dialysis, cerebral amyloid angiopathy, or thrombotic thrombocytopenic purpura.1,2,3 However, this is the unique case of a 62-year-old Asian female who presented with a hemorrhagic stroke suspected to be secondary to refractory hypertension from intracranial large vessel atherosclerotic flow limiting stenosis, with rapid subsequent large vessel occlusion and ischemic stroke. Questions arise such as ideal blood pressure parameters for dual management, timeliness of computed tomography angiography imaging in the emergency department for detection of large vessel occlusion during intracranial hemorrhage, and subsequent selection of treatment plan in the dual-lesion patient population

Anti-Neoplastic Studies Of Standardized Root Extract Of Eurycomal Longifolia (Taf273) Towards Leukaemia

The anti-neoplastic activity of root extracts from Eurycoma longifolia was investigated towards leukaemia using in vitro and in vivo models. Four partially purified sub-fractions (F1, TAF273, F3 and F4) derived from resin chromatography of the crude methanolic extract of E. longifolia roots were screened for the anti-leukaemic, anti-angiogenic and anti-oxidant activities. The in vitro anti-leukaemic activity was tested using K-562, HL-60 and Kasumi-1 leukaemic cell lines whereas in vivo anti-leukaemic activity was tested using K-562-xenograft mice model. The toxicity, mechanism of action and drug combination effect of TAF273 were also investigated

Testing and Stabilization of Saline Sabkha Soils: A Review

Sabkha is one of the many types of evaporate regimes that exist around the globe. In addition to being distributed along the coasts, sabkha soils cover a number of continental depressions, both of which usually form in hot, arid climates and are associated with shallow groundwater tables. Sabkhas are well distributed locally and over the whole world. Sabkhas are characterized as being salt-full and water-sensitive soils. The presence of soluble salts makes the use of distilled water in testing these soils, as recommended by ASTM, etc., inappropriate. Further, sabkha soils possess low strength at their natural condition. Therefore, it would be imperative to stabilize the sabkha soil at the actual moisture content in the field. In this paper, the author reviews the modifications on some ASTM standard test methods in order to properly assess the geotechnical properties of sabkha soils. Moreover, two stabilizing programs of sabkha soil using lime and cement at various dosages are presented. The first program was concerned with stabilizing the sabkha at the optimum moisture content, while the second study was devoted to stabilize the sabkha at high (i.e., natural) moisture contents. The results of these studies indicate that sabkha (as a typical evaporitic soil) can be practically used by the construction industry in many field applications

Cultural relativism : case studies of public relations in the Emirates, 1994-1996

This research investigates the impact of oil on a traditional Arab society. The . literature which addresses societal change IS methodically reviewed, with substantial attention given to the theories of noted sociologist Max Weber as well as many more recent scholars who have adapted and re-interpreted Weber's seminal insights. Following the review of relevant literature, the reader is introduced to the pre-oil, traditional society of the United Arab Emirates (UAE). The body of the research reports, illuminates and examines through case studies the challenges of wrenching social change in a traditional society. The research finds that introduction of oil is the change agent. The invitation extended to Western oil companies to manage the extraction industry resulted in enormous disruption to the society as it then existed, and provided very large sums of capital to the UAE. Both of these factors, the insertion within the society of a western industrial culture of size and importance, and the opportunities for the UAE to develop and modernize at great speed due to the availability of large resources, combined to place enormous tension on the social traditions and practices of the then tribal society.The research then turns to the ways and means that both the society and the western oil companies employed to manage the dynamic of change. The specific role of the Oil Company's Public Relations function is examined in depth. The thesis that the public relations function served both the company and the society at large as the primary agent of mitigation is stated and tested. This paper finds that the public relations function performed a critical service by explaining the traditions of the society to the oil company, and negotiating for the oil company with the formal and informal organizations present in the society. These public relations practitioners also performed the critical task of representing, and at times. performing advocacy services for, groups within the society whose values were threatened by the western practices of the oil companies. This latter function is very different from the traditional roles of western public relations staffs. The research concludes that in this particular circumstance the contribution of the public relations staff was essential to both the company and the society in coping with enormous social pressures

Isolation, Identification Bacteria and Bioremediation of Soil Contaminate Crude Oil from Specific Area (Baiji_Iraq)

In this paper new eight types of bacteria that degrading crude oil were isolated. The isolated were from Baiji, near Tikrit, the center of Salah al-Din Governorate, IRAQ. The nucleotide sequences of the 16rRNA gene revealed that these isolates belong to the genus Bacillus, Cytobacillus and Staphylococcus. These isolated bacteria proved their ability to degradation petroleum hydrocarbons with varying effectiveness, as Cytobacillus firmus IBMA1 bacteria proved 98% effective in degrading hydrocarbons among the mineral salts in petroleum, Bacillus cereus IBMA3 showed a capacity to crack oil compounds by 92% in the medium of SMS mineral salts agar and Bacillus zhangzhouensis IBMA4 showed a cracking ability of 90% for the compounds present in crude oil. The other bacteria degraded petroleum compound with different rates. Based on it, three species that are big destroyers were taken to bioremediate crude oil containment soil from the same polluted site. The capacity of each basin is 10 kg. Each basin was treated with one type of bacteria over a period of two months.  Then also, gas chromatography (GC) was used for soil samples after one and two months of treatment. The experiment was conducted from 17/2/2022 to 17/4/2022. The biological treatment was done using bacteria and contaminated soil. The results showed that IBMA1 bacteria have a great ability to consume PAHs with a consumption rate of 60.365% and that the lowest concentration of the remaining aromatic hydrocarbons was (6.5ppm), while IBMA3 bacteria showed their ability to consume PAHs with an average of 52.217% within two months. From the treatment, the lowest concentration of the remaining aromatic hydrocarbons was (9ppm) and IBMA4 bacteria showed the minimum ability to consume polycyclic aromatic hydrocarbons, with a consumption rate of 44.65% as an average consumption, and the lowest remaining concentrations of petroleum hydrocarbons were by (12ppm), while the average consumption of compounds during the two-month treatment period was 39.280%, and the results of the statistical analysis show the superiority of soil treatment with IBMA1 bacteria over IBMA3 bacteria and IBMA4 bacteria at the probability of  P≤0.01

Estimating the Concentration of Cadmium in the Qayyarah and Kasak Sites and its Impact on the Environment

Cadmium recorded a significant superiority in the soil of the Qayyarah site with a peak of (491.744) mg/kg compared to the Kasak site, which showed its highest concentration in the soil of (D1) at (0) metres. The highest value was recorded at (520.217) mg/kg, which indicates high pollution. Compared to the rest of the dimensions, the lowest concentration of cadmium was in the soil (D2) at a distance of (50) meters, amounting to (428,050) mg/kg. While we note that the Qayyarah site recorded the lowest values of cadmium at the distance (S2D2) (50 metres), with a concentration rate of (450.867) mg/kg. As for cadmium, its highest concentration was at the distance (S2D3) (100 metres) and (S2D5). It reached (521.867) mg/kg. While the Kasak site recorded the highest value of cadmium at a distance of (S1D1) (0 metres) with a concentration of (527.667) mg/kg, while the lowest concentration of cadmium was at point (S1D2) (50 metres) with a value of (405.233) mg/kg