Experimental infection in guinea pig with foot and mouth disease virus

( Abdul Ahad ),( Md Siddiqur Rahman ),( Md Mostafizur Rahman ),( Byeong Kirl Baek ),( John Hwa Lee ) 한국가축위생학회 2003 韓國家畜衛生學會誌 Vol.26 No.1

In order to obtain information on murine model for foot and mouth disease virus (FMDV) type Asia 1, we studied whether guinea pig was a suitable model for studying FMDV. Apparently healthy 3 months old albino guinea pigs and unweaned 3 days old Swiss albino mice were used for this study. Total of 8 guinea pigs were divided into the infected(n=5) and control(n=3) groups. The incubation period of FMDV in the guinea pigs were roughly 2 days and the viremia persisted for 3 days in the guinea pigs. Mice inoculated with the plasma from control guinea pigs did not show any sign of viremia. The plasma were titrated by virus neutralization test using suckling mice as an indicator host. The mean virus neutralizing antibody titers of infected guinea pig at 3 DPI, 4 DPI and 5 DPI were logia 2.16, log10 3.39 and log10 3.44, respectively whereas there was no neutralizing antibody titer in control group. The difference between the mortality pattern and mean virus neutralizing antibody titer of infected and that of control group at day 3, 4, 5 were statistically significant(p<0.01).

Pteromalid wasps (Hymenoptera: Chalcidoidea) associated with bark beetles, with the description of a new species from Kashmir, India

Abdul Lateef Khanday,Pavittu Meethal Sureshan,Abdul Ahad Buhroo,Avunjikkattu Parambil Ranjith,Ekaterina Tselikh 국립중앙과학관 2019 Journal of Asia-Pacific Biodiversity Vol.12 No.2

Five species of pteromalid wasps (Cheiropachus quadrum [Fabricius, 1787], Macromesus harithus Narendran, 2001, Metacolus sinicus Yang, 1996, M. parasinicus sp. nov., and Roptrocerus mirus [Walker, 1834]) reared from branch cuttings of Pinus wallichiana A. B. Jackson (Pinaceae) infested with three species of bark beetles (Ips stebbingi Strohmeyer, 1908, Polygraphus major Stebbing, 1902, and Pityogenes scitus Blandford, 1893) are reported from Kashmir, India. A new species of Metacolus from Kashmir is described and illustrated. A key for the identification of the six known species of Metacolus Förster, 1856 is given. Roptrocerus mirus and M. sinicus are reported for the first time from the Indian subcontinent. New host–parasite associations are reported for three species of pteromalid wasps.

Catecholamine-Functionalized Reduced Graphene Oxide: A Scalable Carbon Host for Stable Cycling in Lithium–Sulfur Batteries

Ahad, Syed Abdul,Kumar, P. Ramesh,Kim, Joo-Hyung,Kim, Dong Jun,Ragupathy, P.,Kim, Do Kyung Pergamon Press 2017 Electrochimica Acta Vol. No.

<P><B>Abstract</B></P> <P>The Lithium–Sulfur battery is a promising high performance battery candidate for large-scale application on account of its high theoretical specific capacity. However, it has come up short on delivering long cycle life mainly due to the formation of soluble polysulfides, which results in the loss of active material during redox processes. In this study, we prepared three different graphene oxide based carbon hosts − graphene oxide (GO), thermally reduced GO (t-rGO) and dopamine-assisted chemically reduced GO (c-rGO) − and investigated their physical and electrochemical properties as a sulfur cathode. We found significant absorbance of polysulfides on the c-rGO host, which provided stable discharge capacity of 601mAhg<SUP>−1</SUP> at 0.5C for up to 300 cycles. This stable cycling behavior is further identified by <I>in-situ</I> UV–vis spectroscopy and <I>ex-situ</I> X-ray photoelectron spectroscopy, confirming the minimization of polysulfide dissolution toward the electrolyte through the adsorption of polydopamine coating.</P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Current status of the anterior middle superior alveolar anesthetic injection for periodontal procedures in the maxilla

Ahad, Abdul,Haque, Ekramul,Tandon, Shruti The Korean Dental Society of Anesthsiology 2019 Journal of Dental Anesthesia and Pain Medicine Vol.19 No.1

Periodontal procedures require adequate anesthesia not only to ensure the patient's comfort but also to enhance the operator's performance and minimize chair time. In the maxilla, anesthesia is often achieved using highly traumatic nerve blocks, apart from multiple local infiltrations through the buccal vestibule. In recent years, anterior middle superior alveolar (AMSA) field block has been claimed to be a less traumatic alternative to several of these conventional injections, and it has many other advantages. This critical review of the existing literature aimed to discuss the rationale, mechanism, effectiveness, extent, and duration of AMSA injections for periodontal surgical and non-surgical procedures in the maxilla. It also focused on future prospects, particularly in relation to computer-controlled local anesthetic delivery systems, which aim to achieve the goal of pain-free anesthesia. A literature search of different databases was performed to retrieve relevant articles related to AMSA injections. After analyzing the existing data, it can be concluded that this anesthetic technique may be used as a predictable method of effective palatal anesthesia with adequate duration for different periodontal procedures. It has additional advantages of being less traumatic, requiring lesser amounts of local anesthetics and vasoconstrictors, as well as achieving good hemostasis. However, its effect on the buccal periodontium appears highly unpredictable.

Realizing High-Performance Li-Polysulfide Full Cells by using a Lithium Bis(trifluoromethanesulfonyl)imide Salt Electrolyte for Stable Cyclability

Ahad, Syed Abdul,Pitchai, Ragupathy,Beyene, Anteneh Marelign,Joo, Sang Hoon,Kim, Do Kyung,Lee, Hyun-Wook Wiley (John WileySons) 2018 CHEM SUS CHEM Vol.11 No.19

Navigation through Citation Network Based on Content Similarity Using Cosine Similarity Algorithm

Abdul Ahad,Muhammad Fayaz,Abdul Salam Shah 보안공학연구지원센터 2016 International Journal of Database Theory and Appli Vol.9 No.5

The rate of scientific literature has been increased in the past few decades; new topics and information is added in the form of articles, papers, text documents, web logs, and patents. The growth of information at rapid rate caused a tremendous amount of additions in the current and past knowledge, during this process, new topics emerged, some topics split into many other sub-topics, on the other hand, many topics merge to formed single topic. The selection and search of a topic manually in such a huge amount of information have been found as an expensive and workforce-intensive task. For the emerging need of an automatic process to locate, organize, connect, and make associations among these sources the researchers have proposed different techniques that automatically extract components of the information presented in various formats and organize or structure them. The targeted data which is going to be processed for component extraction might be in the form of text, video or audio. The addition of different algorithms has structured information and grouped similar information into clusters and on the basis of their importance, weighted them. The organized, structured and weighted data is then compared with other structures to find similarity with the use of various algorithms. The semantic patterns can be found by employing visualization techniques that show similarity or relation between topics over time or related to a specific event. In this paper, we have proposed a model based on Cosine Similarity Algorithm for citation network which will answer the questions like, how to connect documents with the help of citation and content similarity and how to visualize and navigate through the document.

Survey of predators associated with bark beetles (Coleoptera: Curculionidae: Scolytinae) with redescription of Platysoma rimarium Erichson, 1834 from Kashmir, India

Abdul Lateef Khanday,Abdul Ahad Buhroo,Sudhir Singh,Avunjikkattu Parambil Ranjith,Sławomir Mazur 국립중앙과학관 2018 Journal of Asia-Pacific Biodiversity Vol.11 No.3

The bark beetles (Coleoptera: Curculionidae: Scolytinae) are widely recognized as one of the most damaging groups of forest pests. The present article documents the insect predators associated with bark beetles infesting blue pine, Pinus wallichiana A. B. Jacks (Pinaceae), in Kashmir Himalaya. Three species of bark beetles, such as Ips stebbingi Strohmeyer, 1908, Polygraphus major Stebbing, 1903, and Pityogenes scitus Blandford, 1893, are here reported as preyed upon by the following four species of predatory beetles: Thanasimus himalayensis Stebbing, 1914 (Cleridae), Niponius canalicollis Lewis, 1901 (Histeridae), Platysoma rimarium Erichson, 1834 (Histeridae), and Corticeus flavipennis Motschulsky, 1859 (Tenebrionidae). Brief diagnoses with photographs of all the pests and their predators have been provided. P. rimarium is also redescribed. A significant number of predators observed in the galleries of bark beetles and on the infested host material support that predators play a major role in the regulation of bark beetle populations and, therefore, has great relevance to ecological pest management strategies in the forests.

Pattern of buccal and palatal bone density in the maxillary premolar region: an anatomical basis of anterior-middle superior alveolar (AMSA) anesthetic technique

Ahad, Abdul,Haque, Ekramul,Naaz, Sabiha,Bey, Afshan,Rahman, Sajjad Abdur The Korean Dental Society of Anesthsiology 2020 Journal of Dental Anesthesia and Pain Medicine Vol.20 No.6

Background: The anterior-middle superior alveolar (AMSA) anesthetic technique has been reported to be a less traumatic alternative to several conventional nerve blocks and local infiltration for anesthesia of the maxillary teeth, their periodontium, and the palate. However, its anatomic basis remains controversial. The present study aimed to determine if the pattern of cortical and cancellous bone density in the maxillary premolar region can provide a rationale for the success of the AMSA anesthetic technique. Method: Cone-beam computed tomography scans of 66 maxillary quadrants from 34 patients (16 men and 18 women) were evaluated using a volumetric imaging software for cortical and cancellous bone densities in three interdental regions between the canine and first molar. Bone density was measured in Hounsfield units (HU) separately for the buccal cortical, palatal cortical, buccal cancellous, and palatal cancellous bones. Mean HU values were compared using the Mann-Whitney U test and one-way ANOVA with post-hoc analysis. Results: Cancellous bone density was significantly lower (P ≤ 0.001) in the palatal half than in the buccal half across all three interdental regions. However, there was no significant difference (P = 0.106) between the buccal and palatal cortical bone densities at the site of AMSA injection. No significant difference was observed between the two genders for any of the evaluated parameters. Conclusions: The palatal half of the cancellous bone had a significantly lower density than the buccal half, which could be a reason for the effective diffusion of the anesthetic solution following a palatal injection during the AMSA anesthetic technique.

Biological Activities of Five Weed Extracts against Callosobruchus chinensis L. (Coleoptera: Bruchidae)

Md Abdul Ahad,Mst Kamrun Nahar,Md Ruhul Amin,Sang Jae Suh,Yong Jung Kwon 한국응용곤충학회 2015 한국응용곤충학회지 Vol.54 No.2

Mimosa pudica (미모사), Argemone mexicana (멕시코 가시양귀비) Leucus aspara (꿀풀과 일종), Polygonum hydropiper (여뀌), Blumea lacera (국화과 일종) 등 5종의 식물 헥산추출물들의 팥바구미 성충에 대한 살충, 성충우화억제력 및 녹두 종실피해 방제력이 검증되었다. 그 결과, 밭바구미 성충 살충력은 35-69%이었으며, 녹두에 추출물을 처리한 후 성충우화 방제율은 33-63%, 종실 피해 방제율은 13-49%이었다. 추출물의 농도가 증가할수록 살충력, 성충우화 및 종실피해 방제율 등이 증가하는 것으로 나타났다. 이와 같이 5종의 식물 헥산추출물들은 밭바구미 친환경 방제제로 이용가능성이 있을 것으로 판단된다. This study was conducted with n-hexane extracts of sensitive plant Mimosa pudica, mexican poppy Argemone mexicana, panimarich Leucus aspara, water pepper Polygonum hydropiper and shialmutra Blumea lacera weeds against pulse beetle Callosobruchus chinensis (Coleoptera: Bruchidae) for protection of mung bean Vigna radiata grains. The LC50 values of the weed extracts ranged from 4.5 to 6.4, 4.1 to 5.6 and 3.6 to 5.5 g/100 mL at 24, 48 and 72 hours of post treatment, respectively. The extracts showed 35 to 69% fecundity and 33 to 63% adult emergence inhibitory effect on the pest, and revealed 13 to 49% grain protection of mung beans. Insect mortality, fecundity and adult emergence inhibitory effects, and grain protection activity increased with increased concentration of the extracts. The shialmutra followed by water pepper extracts revealed better performances in fecundity and adult beetle emergence inhibitory effect compared to the other weeds. The findings proved that the n-hexane extracts of the five weeds are sources of botanical insecticides which may be used in the integrated management of C. chinensis.

The Role of Alginate Hydrogels as a Potential Treatment Modality for Spinal Cord Injury: A Comprehensive Review of the Literature

Ryan Jarrah,Sally El Sammak,Chiduziem Onyedimma,Abdul Karim Ghaith,F.M. Moinuddin,Archis R. Bhandarkar,Ahad Siddiqui,Nicolas Madigan,Mohamad Bydon 대한척추신경외과학회 2022 Neurospine Vol.19 No.2

Objective: To comprehensively characterize the utilization of alginate hydrogels as an alternative treatment modality for spinal cord injury (SCI). Methods: An extensive review of the published literature on studies using alginate hydrogels to treat SCI was performed. The review of the literature was performed using electronic databases such as PubMed, EMBASE, and OVID MEDLINE electronic databases. The keywords used were “alginate,” “spinal cord injury,” “biomaterial,” and “hydrogel.” Results: In the literature, we identified a total of 555 rat models that were treated with alginate scaffolds for regenerative biomarkers. Alginate hydrogels were found to be efficient and promising substrates for tissue engineering, drug delivery, neural regeneration, and cellbased therapies for SCI repair. With its ability to act as a pro-regenerative and antidegenerative agent, the alginate hydrogel has the potential to improve clinical outcomes. Conclusion: The emerging developments of alginate hydrogels as treatment modalities may support current and future tissue regenerative strategies for SCI.