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Zakir, Mohammad,Khanam, Safiya,Kazmi, Munawwar Husain Cellmed Orthocellular Medicine and Pharmaceutical 2020 셀메드 (CellMed) Vol.10 No.4
Sahdevi is an Indian herb commonly found in all part of the country in rainy season. It is adopted by Arabs due to its easy availability and various important pharmacological actions and uses. It is known by different vernaculars in different parts of the country such as Mahabala in Marathi, Sadodi in Gujrati, Kukseem in Bengali and in English it is called ash-colour fleabane or purple fleabane. The herb contains β-amyrin, lupeol, β-sitosterol, stigmasterol, α-spinasterol, phenolic resin and potassium chloride etc. It contains Dafi'-i Hummiyat (antipyretic) Muqawwi-i Badan (general tonic) and Musaffī-i-Dam (blood purifier) actions and used for management of many disease conditions. It has been used for the management of chronic fevers like fever associated with tuberculosis. It is a priceless herb with important pharmacological action and can be used effectively in place of costly drugs.
Congruences modulo powers of 2 for overpartition pairs into odd parts
Zakir Ahmed,Rupam Barman,Chiranjit Ray 대한수학회 2020 대한수학회지 Vol.57 No.2
We find congruences modulo $32$, $64$ and $128$ for the partition function $\overline{pp}_o(n)$, the number of overpartition pairs of $n$ into odd parts, with the aid of Ramamnujan's theta function identities and some known identities of $t_k(n)$, for $k=6, 7$, where $t_k(n)$ denotes the number of representations of $n$ as a sum of $k$ triangular numbers. We also find two Ramanujan-like congruences for $\overline{pp}_o(n)$ modulo $128$.
Solving the Travelling Salesman Problem Using an Ant Colony System Algorithm
Zakir Hussain Ahmed,Majid Yousefikhoshbakht,Abdul Khader Jilani Saudagar,Shakir Khan International Journal of Computer ScienceNetwork S 2023 International journal of computer science and netw Vol.23 No.2
The travelling salesman problem (TSP) is an important combinatorial optimization problem that is used in several engineering science branches and has drawn interest to several researchers and scientists. In this problem, a salesman from an arbitrary node, called the warehouse, starts moving and returns to the warehouse after visiting n clients, given that each client is visited only once. The objective in this problem is to find the route with the least cost to the salesman. In this study, a meta-based ant colony system algorithm (ACSA) is suggested to find solution to the TSP that does not use local pheromone update. This algorithm uses the global pheromone update and new heuristic information. Further, pheromone evaporation coefficients are used in search space of the problem as diversification. This modification allows the algorithm to escape local optimization points as much as possible. In addition, 3-opt local search is used as an intensification mechanism for more quality. The effectiveness of the suggested algorithm is assessed on a several standard problem instances. The results show the power of the suggested algorithm which could find quality solutions with a small gap, between obtained solution and optimal solution, of 1%. Additionally, the results in contrast with other algorithms show the appropriate quality of competitiveness of our proposed ACSA.
Zakir, H.M.,Islam, Md. Mahidul,Hossain, Md. Sohrab Techno-Press 2016 Advances in environmental research Vol.5 No.2
The Dhaka city, the capital of Bangladesh is one of the most densely populated cities in the world. Tongi canal is situated on the north of the city, which connected the Turag river to the west and the Balu river to the east. A total of 26 water samples were collected from the canal to measure irrigation water quality on the basis of their trace metal and major ionic constituents. Trace metals concentrations in water samples were determined using an Atomic Absorption Spectrophotometer. The amount of Fe, Mn, Zn and Pb in water samples ranged from 0.01-0.80, trace-1.02, trace-0.054 and $0.43-0.64{\mu}g\;mL^{-1}$, respectively. The mean concentration of Ca, Mg, Na, K, $HCO_3{^-}$, $Cl^-$, $BO{_3}^{3-}$, $PO{_4}^{3-}$ and $SO{_4}^{2-}$ in water samples were 45.32, 15.33, 151.65, 11.98, 516.06, 94.69, 0.33, 14.02 and $56.21{\mu}g\;mL^{-1}$, respectively. In respect of $HCO_3{^-}$, $SO{_4}^{2-}$, $PO{_4}^{3-}$ and K contents, most of the water samples were found problematic for irrigation. In context of RSC and hardness, 96 and 92% of water samples were graded as unsuitable and hard class, respectively. The study concluded that Pb content in canal water was comparatively high, so it is desirable to take necessary initiative to minimize the contamination level and to monitor its concentration in water routinely.
Cancer Treatment Using Multiphoton Photodynamic Therapy
Zakir Hossain, S.M.,Golam Azam, S.M.,Enayetul Babar, S.M. The Korean Society of Toxicogenomics and Toxicopro 2006 Molecular & cellular toxicology Vol.2 No.1
Photodynamic therapy (PDT), a newly established treatment for solid tumors, involves the systemic administration of a tumor localizing photosensitizer that is only activated when exposed to light of appropriate wavelength. Photoactivation of photosensitizer in the presence of oxygen results in the formation of highly cytotoxic molecular species, which precipitates necrosis. PDT has now become a promising means for the treatment of cancer due to its specificity, relatively minimal side effects, and inexpensive. However, the application of PDT has been restricted to the treatment of superficial lesions or the use of interstitial light delivery. A single photon generally activates the photochemical reaction in traditional PDT. However the use of multi photon excitation, where two or more photons simultaneously excite a photosensitizer, allows for the use of wavelengths twice as long. Such wavelengths exhibit better transmittance through tissue and thereby deeper penetration is achieved. This paper will review theoretical principles of multi photon excitation, challenges associated with multi photon PDT and update the current and future role of multi photon PDT in cancer.
Md Zakir Sultan,Ki-Moo Lee,문석식 경희대학교 융합한의과학연구소 2009 Oriental Pharmacy and Experimental Medicine Vol.9 No.1
The antibacterial activity-guided fractionation of the MeOH extract of seeds of traditional medicinal plant Prunus japonica resulted in the isolation of linoleic acid and cis-11-eicosenoic acids, and their methyl esters. Linoleic acid inhibited the growth of Propionibacterium acnes, the acne-causing anaerobic bacterium, but cis-11-eicosenoic acid, methyl linoleate, and cis-11- eicosenoate were found to be inactive. Together with isolated linoleic acid, authentic saturated and unsaturated fatty acids were also tested against P. acnes with other bacteria and fungi. Most of the unsaturated fatty acids possessed anti-acne (MIC 16-128 μg/mL) and antimicrobial properties.
M. ZAKIR SAADULLAH KHAN 경제연구소 2012 Journal of Economic Development Vol.37 No.3
This paper empirically examines the Friedman hypothesis on political, civil and economic freedom that, a country can have a high degree of civil freedom, and a high degree of economic freedom without any political freedom, but can not have any political freedom if it does not have some degree of civil and economic freedom. Using panel data of five SAARC countries over the period 1995-2011, the dynamic panel data econometric techniques and Granger-causality tests validated the Friedman hypothesis regarding economic and political freedom, but regarding civil and political freedom the reverse is found true. The estimates of the empirical model using UECM show that economic freedom has significant short-run and long-run effects in improving the political freedom in the SAARC region.
CONGRUENCES MODULO POWERS OF 2 FOR OVERPARTITION PAIRS INTO ODD PARTS
Ahmed, Zakir,Barman, Rupam,Ray, Chiranjit Korean Mathematical Society 2020 대한수학회지 Vol.57 No.2
We find congruences modulo 32, 64 and 128 for the partition function ${\overline{PP}_o}(n)$, the number of overpartition pairs of n into odd parts, with the aid of Ramamnujan's theta function identities and some known identities of t<sub>k</sub>(n), for k = 6, 7, where t<sub>k</sub>(n) denotes the number of representations of n as a sum of k triangular numbers. We also find two Ramanujan-like congruences for ${\overline{PP}_o}(n)$ modulo 128.