Pemphigoid excoriée: a further variant of bullous pemphigoid?
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Female↗
Biomedical subjects
S J Allan
Publications and source records attributed to S J Allan.
Parallel implementations of individual-based models in biology: bulletin- and non-bulletin-board approaches.
Particle-based models are simulations in which the discrete representation of physical phenomenon involves interacting particles. This paper studies the efficiency of two different methods of implementing these models on a network of UNIX workstations. Two data parallel methods of modeling particles are tested: bulletin-board and non-bulletin-board. In the former method, the programs communicate through a logically shared, associative memory called a bulletin-board. The simulated particles are distributed among the workstations dynamically as the processing load on the processors changes. In the latter method, the particles are divided amongst the networked workstations statically at load time. The simulated system is a collection of ants moving and foraging in a two-dimensional space. This paper analyzes and compares the execution times of both implementations for different combinations of particles and number of workstation, using speed-up, tuple granularity and communication cost as measures. Analysis shows that the bulletin-board method is better for particle-based simulations when the correct granularity is chosen.
Animals↗
Paget's disease of the scrotum: a case exhibiting positive prostate-specific antigen staining and associated prostatic adenocarcinoma.
A 75-year-old man with carcinoma of the prostate presented with a pruritic, erythematous plaque involving the scrotal skin. Histological examination revealed extramammary Paget's disease. The intraepidermal tumour cells expressed prostate-specific antigen in keeping with a prostatic origin.
Adenocarcinoma↗
Amelanotic lentigo maligna and amelanotic lentigo maligna melanoma: a report of three cases mimicking intraepidermal squamous carcinoma.
The clinical diagnosis of amelanotic melanoma may pose diagnostic difficulties. We report three cases of amelanotic lentigo maligna, two of which developed an invasive component (lentigo maligna melanoma). The clinical appearances in each case mimicked intraepidermal squamous carcinoma.
Aged↗
Isolated lichen planus of the lip.
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Humans↗
'Naevophobia'.
In recent years there has been intensive media interest in pigmented lesions and several skin cancer prevention/early detection campaigns. Pigmented lesions may cause great anxiety, although patients are usually reassured once their moles have been examined by a dermatologist. We describe a case in which a young man with multiple pigmented naevi attempted to remove all the lesions himself. This self-mutilation occurred despite his having attended a dermatology clinic.
Adult↗
Annular purpura and step aerobics.
Step aerobic classes are at present one of the most popular forms of exercise undertaken by young adults. To date no dermatological abnormalities have been described in people regularly performing step aerobics. We describe a case in which a healthy young woman developed an extensive pigmented purpuric eruption 4 weeks after commencing regular step aerobic classes. The eruption resolved completely 8 weeks after regular exercise was ceased.
Adult↗
Cassava root meal in diets for growing rabbits.
The effects of substituting imported cassava root meal for barley meal in rations for growing rabbits were examined. Four diets were used. Diet 1 contained 500 g/kg barley meal, the remainder of the diet consisted of soya bean meal, barley straw, vitamins and minerals. Diets 2, 3 and 4 contained increasing amounts of cassava root meal in place of barley meal at 165, 335 and 500 g/kg respectively with L-lysine and DL methionine supplements. A growth trial was carried out using 48 individually caged rabbits from 0.8 kg to 2.0 kg and the digestibilities of the diets were determined in balance trials. Growth rates were similar on all treatments (41.6, 43.1, 40.6 and 41.0 g/d respectively, s.e.d. 2.39), as were dry matter food conversion ratios (2.27:1 overall). The cassava meal appeared to have a digestible energy approximately 1.6 MJ/kg DM higher than that of the barley meal. There appeared to be no adverse effects of feeding diets containing 500 g/kg cassava root meal on animal health. The intrinsic variability in chemical composition of cassava root products is discussed.
Amino Acids↗