92,698 research outputs found
Hossain et al JAAD - Keratinocyte carcinoma resected by Mohs micrographic surgery in individuals with skin of color: an observational study
No full textSupplemental Table: Tumor and Mohs Micrographic Surgery in Hispanic Individuals Characterized by Fitzpatrick Skin TypeSupplemental data accompany the following research letter:Keratinocyte carcinoma resected by Mohs micrographic surgery in individuals with skin of color: an observational study.Onjona B. Hossain BS, Karolina Mieczkowska MD, Rithu Srikantha MD, Alexandra Rzepecki MD, David H. Ciocon MD, Dean Hosgood PhD, Ramone F. Williams MD, MPhilTHIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE. TO VIEW A LIST OF FILES AND ACCESS THE FILES IN THIS DATASET CLICK ON THE DOI-LINK ABOV
Renewable energy: Addressing environmental issues in Bangladesh
Full text linkUndesirable synergies are being witnessed in Bangladesh between disrupted environmental norms, an increasing demand for energy and widening poverty. The country has experienced natural mishaps throughout its history, but not as frequently as they are happening currently. The trend of untimely appearance of floods, droughts and cyclones is now common and it affects harvests and normal living. Other environmental problems such as desertification, rapid loss of biodiversity, silting of rivers, rising temperature, salinisation, arsenical contamination of potable water and destabilisation of mangrove forests, all are emerging phenomena requiring mitigation measures. All these phenomena affect harvest and economic safety, they beget poverty which in turn predisposes the poor to have more children for security. This in tum puts pressures on the country's resource base in terms of exploitation beyond its natural regeneration capacity. In addition, traditional and modem systems of using primary energy source have also contributed to environmental degradation and climate change (Hossain, 200 1 :210).
The rising need for energy sources, coupled with population growth and economic development, continues to push the unsustainable exploitation of the country's limited natural resources. There is a need for a different approach to combat this trend and the paper argues for the endorsement of renewable energy as an optimal solution. In addition to the environmental benefits, these types of technologies offer the benefits of being relatively small-scale with the potential to be home based which fits well within the village culture of the country (Hossain and Marinova, 2003)
Nephtys bangladeshi Hossain & Hutchings, 2016, n. sp.
No full textNephtys bangladeshi n. sp. (Figs 2, 3, 4, 5; Table 1) Material examined. HOLOTYPE: AM W. 47794 (parapodia of chaetiger 3 removed and mounted for chaetal count), Bangladesh, Chairman Ghat, Noakhali, 22 ° 30 ' 48.3876 "N, 91 ° 5 ' 6.6078 "E, mid-intertidal zone from a tributary of Meghna Estuary, coll. Hossain, M.B, April 2015. PARATYPES: AM W. 47795 (19 mm in length for 42 chaetigers, 1 mm width, parapodia of chaetigers 20, 35 removed and mounted for chaetal count), AM W. 47796 (11 mm in length for 31 chaetiger, 0.8 mm width; parapodia of chaetigers 10, 25 removed and mounted for chaetal count), AM W. 47797 (1 mounted for SEM), AM W. 47798 (1 mounted for SEM), AM W. 47799 (1 mounted for SEM), AM W. 47800 (1 mounted for SEM), all from same location as holotype. FIGURE 3. Nephtys bangladeshi n. sp. Line drawings under compound microscope: A. 10 th chaetiger, B. 20 th chaetiger, C. 25 th chaetiger, D. 32 th chaetiger. All scale bars 0.1 mm. ac = aciculum, b = branchia, dc = dorsal cirrus, nl = notopodial lobe, nel = neuropodial lobe, vc = ventral cirrus. Diagnosis. Pharynx with 9 pairs of bifid terminal and 14 rows of subterminal papillae; each subterminal row with 5–7 papillae, mid-ventral simple terminal papilla and long mid-dorsal subterminal papilla present; verrucae absent; branchiae from chaetiger 7 to 27 occupying 3 / 4 of interramal space, completely absent posteriorly; distinct barred and capillary chaetae with spines present, lyrate chaetae absent. Description. Holotype entire, body dorso-ventrally flattened, tapering posteriorly, pharynx not everted. Length 25 mm for 60 chaetigers, maximum width at 12 th chaetiger 1.2 mm, excluding chaetae. Paratypes (incomplete) material ranges from 11–19 mm length, 0.8–1 mm wide for 31–42 chaetigers. Preserved body without pigmentation. Prostomium approximately square when pharynx not everted (Fig. 2 A). Terminal antennae and palps of almost similar length present, palps ventral to the antennae (Figs. 2 A & 4 D). Nuchal organs not visible. Eyespots visible at level of chaetiger 2 but subdermal (Fig. 2 A). Pharynx not everted (examined by dissection of paratype material, AM W. 47795), with 9 pairs of bifid terminal, 14 rows of subterminal papillae, each row with 5–7 papillae; mid-ventral simple terminal papilla and long mid-dorsal subterminal papilla present, verrucae absent; 1 pair of jaws present. Parapodia biramous and well-developed (Fig. 3 A–D) with long chaetae which become progressively longer posteriorly (Fig. 4 D–F). First parapodia well demarcated, rudimentary and projecting anteriorly (Fig. 4 A); dorsal and ventral cirri short, slender and poorly developed. Dorsal cirri of subsequent parapodia very short, papillae-like and swollen basally (Fig. 4 B); Ventral cirri short and digitiform (Figs. 4 B & 5 C). Notopodia with conical and pointed acicular lobe (Figs. 3 B & 4 A). Aciculae large with pointed tips (Fig. 4 A). Preacicular and postacicular lamellae less prominent, foliose and shorter than acicular lobes (Fig. 4 B). FIGURE 4. Nephtys bangladeshi n. sp. SEM photographs: A. Dorsal view of anterior chaetigers; B. Lateral view of chaetiger 4-6; C. Lateral view of chaetiger 7–9; D. Lateral view of chaetiger 13; E. Lateral view of chaetiger 17–19; F. Posterior chaetigers. An = antenna, s 1 = 1 st Chaetiger, b = branchia, p = palp, dc = dorsal cirrus, vc = ventral cirrus, pc = pygidial cirri (one missing). Scale bars: A, B, C, E = 100 µm; D = 20 µm; F = 200 µm. (A, B, D from paratype AM W. 47797; C, E, from paratype AM W. 47798). Chaetae of two types: barred chaetae (Fig. 5 H) present in preacicular fascicle of anterior noto- and neuropodia; postacicular capillary chaetae with spines, spines visible only with SEM (Fig. 5 D–F) and sporadically scattered (in irregular rows) along the tip of capillaries but bases and margins of these capillary chaetae free of spines (Fig. 5 F). Short capillaries (basal margin smooth with only tip serrated) observed (Fig. 5 D & G; short capillaries may represent emergent tips of developing chaetae of other types, see Dnestrovskaya & Jirkov 2011, pp. 4). Lyrate chaetae absent. Chaetal counts along body given in Table 1. Chaetiger 3 Noto Pre-acicular 4 barred, 3 broad-bladed smooth capillaries Post-acicular 2 barred, 8 broad-bladed smooth capillaries Neuro Pre-acicular 2 barred, 3 broad-bladed smooth capillaries Post-acicular 3 barred, 2 broad-bladed smooth capillaries Chaetiger 10 Noto Pre-acicular 9 barred, 10 broad-bladed smooth capillaries Post-acicular 10 broad-bladed smooth capillaries Neuro Pre-acicular 3 barred, 8 broad-bladed smooth capillaries Post-acicular 2 barred, 12 broad-bladed smooth capillaries Chaetiger 20 Noto Pre-acicular 9 broad-bladed smooth capillaries Post-acicular 12 broad-bladed smooth capillaries Neuro Pre-acicular 12 broad-bladed smooth capillaries Post-acicular 16 broad-bladed smooth capillaries Chaetiger 25 Noto Pre-acicular 11 broad-bladed smooth capillaries Post-acicular 17 broad-bladed smooth capillaries Neuro Pre-acicular 10 broad-bladed smooth capillaries Post-acicular 15 broad-bladed smooth capillaries Chaetiger 35 Noto Pre-acicular 15 broad-bladed smooth capillaries Post-acicular 14 broad-bladed smooth capillaries Neuro Pre-acicular 14 broad-bladed smooth capillaries Post-acicular 16 broad-bladed smooth capillaries Branchiae digitiform, present from chaetigers 7–27, absent posteriorly; slightly curved inwardly (Figs. 2 C, 3 B & 4 D), increasing in size up to chaetigers 18–22 occupying ¾ of interramal space (Fig. 3 B), then decreasing in size subsequently, completely absent from chaetiger 27 onwards (Fig. 2 D & E). Interramal ciliated patches visible (Fig. 2 C) only after staining with methylene blue, present on branchial and post-branchial chaetigers. One pair of pygidial cirri present (Fig. 4 F). Variation. Paratypes range from 11–19 mm in length, and 0.8–1 mm in width for 31–42 chaetigers, eye spots not visible in some paratypes. Etymology. The new species N. bangladeshi n. sp. is Named after the country from which it was collected. Habitat. Intertidal coastal mudflats, depth 0.5 to 1.5 m. Type locality. Chairman Ghat, Noakhali, Bangladesh. Distribution. Known only from the type locality.Published as part of Hossain, M. Belal & Hutchings, Pat, 2016, Nephtys bangladeshi n. sp., a new species of Nephtyidae (Annelida: Phyllodocida) from Bangladesh coastal waters, pp. 41-52 in Zootaxa 4079 (1) on pages 42-47, DOI: 10.11646/zootaxa.4079.1.3, http://zenodo.org/record/27087
Imaging and diagnostic capabilities of anterior segment optical coherence tomography in microbial keratitis
No full textPurpose: Anterior segment optical coherence tomography (AS-OCT) provides high-resolution non-contact corneal scans. We have investigated the imaging and diagnostic capabilities of AS-OCT in microbial keratitis. Primary aim was to assess the ability of AS-OCT to measure corneal thickness in the area affected by microbial keratitis. Secondary aim was to assess AS-OCT qualitative and quantitative parameters during the course of the disease.Method: A prospective study of 10 patients (eyes) with culture proven microbial keratitis. Patients underwent standard clinical examination and treatment based on slit-lamp findings. AS-OCT scanning was performed on presentation, 2–4 days, 6–8 days, and14 days or longer on treatment. In all scans the scanning beam passed through the centre of the infiltration at a specific meridian. All scans were performed by one investigator.Results: Corneal thickness in the infiltrated region could be measured in nine eyes; in one eye the endothelial surface was indistinguishable from an endothelial inflammatory mass. Eight of these nine eyes responded well to topical antibiotic treatment, one required penetrating keratoplasty. In all 8 cases, clinical improvement was associated with reduction in corneal thickness on serial scanning. Mean corneal thickness on presentation was 939 mm (SD 89), decreasing to 797mm (SD 80) (p = 0.08), 703 mm (SD 60) (p < 0.05) and 640 mm(SD 64) (p < 0.05) at the above intervals. In the eye that required surgery, clinical deterioration correlated with AS-OCT corneal thinning progression and descmetocoele formation. Other parameters that could be measured included infiltration depth and dimensions of endothelial inflammatory mass. AS-OCT provided a range of qualitative parameters. Corneal infiltration was imaged as a hyper-reflective area in the corneal stroma. Anterior chamber inflammatory cells and retrocorneal pathology could also be imaged.Conclusion: AS-OCT imaging provides a range of parameters that can be used to objectively assess microbial keratitis. Serial scans can aid objective evaluation of response to treatment
An overview of the genus Plesionika Bate, 1888 (Decapoda, Caridea, Pandalidae) in Asian waters
No full textAhamed, Ferdous, Cardoso, Irene A., Ahmed, Zoarder F., Hossain, Md. Y., Ohtomi, Jun (2017): An overview of the genus Plesionika Bate, 1888 (Decapoda, Caridea, Pandalidae) in Asian waters. Zootaxa 4221 (5): 575-593, DOI: https://doi.org/10.11646/zootaxa.4221.5.
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
In-vivo study of human microbial keratitis with anterior segment OCT
No full textPurpose: : Anterior Segment Optical Coherence Tomography (AS-OCT) is a novel imaging modality that provides high-resolution corneal scans by non-contact examination. We investigate microbial keratitis (MK) in a prospective longitudinal study with AS-OCT. We assess the ability of Visante AS-OCT to measure corneal thickness (CT) and infiltrate thickness (IT) in the affected area and investigate the temporal change of these parameters during the course of the disease.Methods: : Twenty seven patients with suspected microbial keratitis underwent slit-lamp examination and AS-OCT scans on day of presentation and days 3, 7 and 14 post-presentation. The scanning beam passed through the infiltrate centre at a specific meridian for all scans. Measurements of CT and IT were obtained in the centre of the infiltrated area on high-resolution images with calliper tools provided by the Visante OCT software (version 1.1.2). Scans and measurements were carried out by the same investigator.Results: : Clinical resolution occurred in 26 cases; mean CT decreased from 898m (SD±204) on presentation to 753m (SD±161) [p<0.01], 677m (SD±178) [p<0.001] and 584m (SD±146) [p<0.001] on days 3, 7 and 14 respectively. Mean IT decreased from 394m (SD±182) to 319m (SD±162) [p=0.16], 295m (SD±135) [p=0.06] and 207m (SD±87) [p<0.001] respectively. CT and IT decreased significantly more rapidly (48m/day and 25m/day respectively) in the first 3 days of treatment compared to later time intervals, 3-7 and 7-14 days (p<0.05). In one case with clinical deterioration, CT decreased and IT increased before penetrating keratoplasty was required for perforation.Conclusions: : This is the first study to measure in-vivo CT and IT during the clinical course of MK. Clinical resolution is associated with a rapid reduction of CT and IT the first 3 days of treatment; CT decreases significantly by day 3, whereas IT only decreases significantly by day 14. AS-OCT provides serial objective assessment of the extent and depth of corneal inflammation
Recent advances in ophthalmic anterior segment imaging: a new era for ophthalmic diagnosis?
No full textAnterior segment imaging is a rapidly advancing field of ophthalmology. New imaging modalities, such as rotating Scheimpflug imaging (Pentacam-Scheimpflug) and anterior segment optical coherence tomography (Visante OCT and Slit-Lamp OCT), have recently become commercially available. These new modalities supplement the more established imaging devices of Orbscan scanning slit topography and ultrasound biomicroscopy (UBM). All devices promise quantitative information and qualitative imaging of the cornea and anterior chamber. They provide a quantitative angle estimation by calculating the angle between the iris surface and the posterior corneal surface. Direct angle visualisation is possible with the OCT devices and UBM; they provide images of the scleral spur, ciliary body, ciliary sulcus and even canal of Schlemm in some eyes. Pentacam-Scheimpflug can measure net corneal power, a feature particularly useful for cataract patients having undergone previous corneal surgery. Anterior segment OCT can measure corneal flap depth following LASIK and anterior chamber width prior to phakic intraocular lens implantation. The arrival of the new imaging devices may herald the dawn of a new era for ophthalmic diagnosis, particularly in view of the ease and non-contact nature of examination
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