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( Kamal ),( Ahmed ),( Anver Basha Shaik ),( C. Ganesh Kumar ),( Poornima Mongolla ),( P. Usha Rani ),( K. V. S ),( Rama Krishna ),( Suman Kumar Mamidyala ),( Joveeta Joseph ) 한국미생물 · 생명공학회 2012 Journal of microbiology and biotechnology Vol.22 No.1
In an ongoing survey of the bioactive potential of microorganisms from Ladakh, India, the culture medium of a bacterial strain of a new Pseudomonas sp., strain ICTB-745, isolated from an alkaline soil sample collected from Leh, Ladakh, India, was found to contain metabolites that exhibited broad-spectrum antimicrobial and biosurfactant activities. Bioactivity-guided purification resulted in the isolation of four bioactive compounds. Their chemical structures were elucidated by 1H and 13C NMR, 2D-NMR (HMBC, HSQC, 1H,1H-COSY, and DEPT- 135), FT-IR, and mass spectroscopic methods, and were identified as 1-hydroxyphenazine, phenazine-1-carboxylic acid (PCA), rhamnolipid-1 (RL-1), and rhamnolipid-2 (RL-2). These metabolites exhibited various biological activities like antimicrobial and efficient cytotoxic potencies against different human tumor cell lines such as HeLa, HepG2, A549, and MDA MB 231. RL-1 and RL-2 exhibited a dose-dependent antifeedant activity against Spodoptera litura, producing about 82.06% and 73.66% antifeedant activity, whereas PCA showed a moderate antifeedant activity (63.67%) at 60 μg/cm2 area of castor leaf. Furthermore, PCA, RL-1, and RL-2 exhibited about 65%, 52%, and 47% mortality, respectively, against Rhyzopertha dominica at 20 μg/ml. This is the first report of rhamnolipids as antifeedant metabolites against Spodoptera litura and as insecticidal metabolites against Rhyzopertha dominica. The metabolites from Pseudomonas sp. strain ICTB-745 have interesting potential for use as a biopesticide in pest control programs.
Nominal flexural strength of high-strength concrete beams
Al-Kamal, Mustafa Kamal Techno-Press 2019 Advances in concrete construction Vol.7 No.1
The conventional ACI rectangular stress block is developed on the basis of normal-strength concrete column tests and it is still being used for the design of high-strength concrete members. Many research papers found in the literature indicate that the nominal strength of high-strength concrete members appears to be over-predicted by the ACI rectangular stress block. This is especially true for HSC columns. The general shape of the stress-strain curve of high-strength concrete becomes more likely as a triangle. A triangular stress block is, therefore, introduced in this paper. The proposed stress block is verified using a database which consists of 52 tested singly reinforced high-strength concrete beams having concrete strength above 55 MPa (8,000 psi). In addition, the proposed model is compared with models of various design codes and proposals of researchers found in the literature. The nominal flexural strengths computed using the proposed stress block are in a good agreement with the tested data as well as with that obtained from design codes models and proposals of researchers.
Nominal axial and flexural strengths of high-strength concrete columns
Mustafa Kamal Al-Kamal 사단법인 한국계산역학회 2019 Computers and Concrete, An International Journal Vol.24 No.1
The ACI building code is allowing for higher strength reinforcement and concrete compressive strengths. The nominal strength of high-strength concrete columns is over predicted by the current ACI 318 rectangular stress block and is increasingly unconservative as higher strength materials are used. Calibration of a rectangular stress block to address this condition leads to increased computational complexity. A triangular stress block, derived from the general shape of the stressstrain curve for high-strength concrete, provides a superior solution. The nominal flexural and axial strengths of 150 highstrength concrete columns tests are calculated using the proposed stress distribution and compared with the predicted strength using various design codes and proposals of other researchers. The proposed triangular stress model provides similar level of accuracy and conservativeness and is easily incorporated into current codes.
WHEN BEING “NATIVE” IS NOT ENOUGH: CITIZENS AS FOREIGNERS IN MALAYSIA
Kamal Sadiq 경남대학교 극동문제연구소 2009 ASIAN PERSPECTIVE Vol.33 No.1
Why do the natives of Sabah oppose the internal migration of natives from the rest of Malaysia? Why is being “native” not enough? The hostility is in direct contrast to what most scholars know about Malaysia: a multiethnic country with successful preferential policies for its natives.the “sons of the soil.” In a plural state like Malaysia, there are competing native claims on citizenship. Here, regional natives(Kadazandusun from Sabah) contest claims by federal natives (Malays). The conflicts over culture, economy, and political power fracture a national citizenship into its regional and federal parts, pitting native against native. In particular, regional natives empower the notion of a regional citizenship by supporting restrictions on the internal migration of fellow citizens. As a consequence, Malaysia’s goal of a“national” citizenry fashioned on native Malay norms is undermined. Malaysia offers important insight into the enduring dilemma of modern plural states: how to create a common national citizenship.
Proteomic Analysis of Stress Responses Protein in Wheat (Triticum aestivum L)
Kamal, Abu Hena Mostafa,Kim, Ki-Hyeon,Shin, Kwang-Hyun,Seo, Hyeong-Seok,Shin, Dong-Hoon,Hong, Lan-Seon,Park, Cheol-Soo,Jong, Young-Keun,Heo, Hwa-Young,Song, Beom-Heon,Lee, Chul-Won,Woo, Sun-Hee The Korean Society of Crop Science 2009 Korean journal of crop science Vol.54 No.1
Kamal Adel Amin,Basant Mahmoud Mohamed,Mohamed Aly M. El-wakil,Sanaa Omar Ibrahem 한국유방암학회 2012 Journal of breast cancer Vol.15 No.3
Purpose: Carcinoma of the breast is the most prevalent cancer among Egyptian women and constitutes 29% of National Cancer Institute cases. The aim of this study was to determine the effect of breast cancer on oxidative stress, cardiac markers and liver function tests, moreover the role of 5-fluorouracil, doxorubicin, and cyclophosphamide (FAC) in the treatment of breast cancer and its mechanism through changing the measured markers. Methods: Forty female breast cancer patients who were admitted to the Department of Oncology of the Beni-Suef University Hospital were enrolled in the study. This study included three arms: a control group of healthy age-matched females (n=20), breast cancer patients who weren’t receiving treatment (n=20), and patients undergoing treatment with anticancer combination drugs FAC (n=20). Blood samples collected from the control subjects and patients were analysed to determine levels of catalase, reduced glutathione (GSH), uric acid, nitric oxide (NO), malondialdehyde, creatine kinase (CK), lactate dehydrogenase (LDH), liver enzymes (alanine aminotransferase and aspartate aminotransferase), and creatinine. Results: The levels of catalase and GSH were significantly reduced (p<0.05) in breast carcinoma and FAC treated breast cancer patients. The lipid peroxidation and NO levels were significantly enhanced in both untreated and FAC treated breast cancer patients. The CK and LDH were significantly enhanced (p<0.05) in the FAC group. Conclusion: The results from the present study show that oxidative stress is implicated in breast carcinoma and chemotherapy aggravates this oxidative stress which causes damage to many cellular targets and has the main side effect of cardiotoxicity.
Cleanness of skew generalized power series rings
Kamal Paykan 대한수학회 2020 대한수학회보 Vol.57 No.6
A skew generalized power series ring $R[[S, \omega]]$ consists of all functions from a strictly ordered monoid $S$ to a ring $R$ whose support contains neither infinite descending chains nor infinite antichains, with pointwise addition, and with multiplication given by convolution twisted by an action $\omega$ of the monoid $S$ on the ring $R$. Special cases of the skew generalized power series ring construction are skew polynomial rings, skew Laurent polynomial rings, skew power series rings, skew Laurent series rings, skew monoid rings, skew group rings, skew Mal'cev-Neumann series rings, the ``untwisted" versions of all of these, and generalized power series rings. In this paper we obtain some necessary conditions on $R$, $S$ and $\omega$ such that the skew generalized power series ring $R[[S,\omega ]]$ is (uniquely) clean. As particular cases of our general results we obtain new theorems on skew Mal'cev-Neumann series rings, skew Laurent series rings, and generalized power series rings.