scholarly journals The Cerebro-Spinal Fever Epidemic of 1917 at X Depot

1918 ◽  
Vol 17 (2-3) ◽  
pp. 350-365 ◽  
Author(s):  
J. A. Glover
Keyword(s):  
Sporadic Case ◽  
Cold Weather ◽  
Type I ◽  
Carrier Rate ◽  
Type Ii ◽  
Black Line ◽  
First Case ◽  
Epidemic Period ◽  
High Carrier ◽  
Zinc Sulphate Solution

(1) There were nineteen cases and eight deaths at the depot during the epidemic.One doubtful case during this period recovered, and a sporadic case in June due to Type I also recovered; these are not included in the above, nor is one man who went on leave to Blackpool, and developed the disease (Type II) on arrival.(2) So far the reserve battalions have had three cases only, with two deaths, although a high carrier-rate wave has been detected in two.(3) All the cases (except the June case) at the depot occurred during exceptionally cold weather. In the chart the cases appear to lie in thetrough of a great depression of the curve of mean weekly temperature (broken line). They also follow immediately upon exceptional crowding (black line).(4) There was a well-marked premonitory rise in the carrier-rate in December 1916, before the first case occurred, and an enormous rise before the epidemic was really established.The carrier-rate, which was 19·25% on December 23rd, reache dwhat is usually considered the danger point of 20% (see War OfficeMemorandum on Cerebro-spinal Fever, page 2) just six days before the first case occurred.It would appear that estimations of the carrier-rate by means of large sample swabbings afford a reliable warning of the imminence or danger of an epidemic.(5) The cases in the epidemic were nearly all due to the meningococcus of Type II, the organism present in the outbreak of 1916.The rise in the carrier-rate was also chiefly due to the increase ofcarriers of this type. Freshly joined recruits showed few carriers at all and very few Type II carriers when swabbed before having slept in the barracks.(6) During the epidemic, the carrier-rate among non-contacts was substantially the same as amongst the actual contacts of cases, averaging34% for the period, in each case.(7) The proportion of agglutinable strains to inagglutinable strains of organisms morphologically indistinguishable from the meningococcus increased very markedly during the epidemic period.(8) The treatment of the whole population by the steam zinc sulphate solution spray (which was carried out daily for two seven-day periods with an interval of a fortnight), was followed by a satisfactory drop in the carrier-rate, and by a temporary cessation of cases on each occasion.(9) 60% of the actual patients suffering from the disease were in their first month of service.40% of the patients had either been inoculated or vaccinated within seven days of onset (three on the same day); 60% within afortnight.(10) Previous and concurrent epidemics of German measles, influenza and bronchitis had helped (by causing coughing and sneezing and by lowering vitality) to produce the great rise in the carrier-rate, which culminated in the case epidemic.

scholarly journals On the Nature and Variability of the East Greenland Spill Jet: A Case Study in Summer 2003*

2011 ◽  
Vol 41 (12) ◽  
pp. 2307-2327 ◽  
Author(s):  
M. G. Magaldi ◽  
T. W. N. Haine ◽  
R. S. Pickart
Keyword(s):  
Local Perturbation ◽  
Type I ◽  
Type Ii ◽  
East Greenland ◽  
Denmark Strait ◽  
First Case ◽  
Hydrographic Structure ◽  
Case Type ◽  
Surface Fields

Abstract Results from a high-resolution (~2 km) numerical simulation of the Irminger Basin during summer 2003 are presented. The focus is on the East Greenland Spill Jet, a recently discovered component of the circulation in the basin. The simulation compares well with observations of surface fields, the Denmark Strait overflow (DSO), and the hydrographic structure of typical sections in the basin. The model reveals new aspects of the circulation on scales of O(0.1–10) days and O(1–100) km. The model Spill Jet results from the cascade of dense waters over the East Greenland shelf. Spilling can occur in various locations southwest of the strait, and it is present throughout the simulation but exhibits large variations on periods of O(0.1–10) days. The Spill Jet sometimes cannot be distinguished in the velocity field from surface eddies or from the DSO. The vorticity structure of the jet confirms its unstable nature with peak relative and tilting vorticity terms reaching twice the planetary vorticity term. The average model Spill Jet transport is 4.9 ±1.7 Sv (1 Sv ≡ 106 m3 s−1) equatorward, about 2½ times larger than has been previously reported from a single ship transect in August 2001. Kinematic analysis of the model results suggests two different types of spilling events. In the first case (type I), a local perturbation results in dense waters descending over the shelf break into the Irminger Basin. In the second case (type II), surface cyclones associated with DSO deep domes initiate the spilling process. During summer 2003, more than half of the largest Spill Jet transport values are of type II.

scholarly journals P.193 Competitive Flow Diversion: Proposed Classification System

2021 ◽  
Vol 48 (s3) ◽  
pp. S76-S76
Author(s):  
MA MacLean ◽  
T Huynh ◽  
M Schmidt ◽  
VM Pereira ◽  
A Weeks
Keyword(s):  
Subarachnoid Haemorrhage ◽  
Classification System ◽  
Flow Diversion ◽  
Endovascular Coiling ◽  
Parent Artery ◽  
Type I ◽  
Type Ii ◽  
First Case ◽  
Aneurysm Occlusion ◽  
Normal Artery

Background: Competitive flow diversion (CFD) is a novel application of flow diversion stenting (FDS), redirecting flow into a normal artery proximal or distal to the aneurysmal parent artery. A classification system for CFD has not been previously reported. Methods: Report of operative technique and novel classification system for CFD. Results: A patient with subarachnoid haemorrhage and three aneurysms arising from the Pcomm-P1 complex, was treated with endovascular coiling and CFD. The PCOM aneurysm was coiled. Two aneurysms arose from the distal right P1- PCA. After a failed attempt to treat with FDS across the P1-PCA, the P1-aneurysms were successfully treated with CFD distal to the P1-PCA, from Pcomm to P2. Over 12 months, CFD redirected flow via ICA-Pcomm-P2, reducing the size of the P1-PCA, obliterating the P1-aneurysms. Herein, we classify competitive flow diversion into two types. Type I CFD is when the parent artery harbouring the aneurysm is “jailed” proximally. Type II CFD occurs when flow is diverted from the parent artery distal to the aneurysm origin. Conclusions: Herein, we propose a novel classification for CFD. We describe the first case of aneurysm occlusion in the circle of Willis with Type II CFD, and use of CFD for the treatment of multiple adjacent aneurysms.

Mild Encephalitis/Encephalopathy with Reversible Splenial Lesion (MERS) due to Cytomegalovirus: Case Report and Review of the Literature

2017 ◽  
Vol 49 (01) ◽  
pp. 068-071 ◽  
Author(s):  
Giulia Porretti ◽  
Giuliana Marchiò ◽  
Maria Bellizzi ◽  
Mauro Recla ◽  
Paola Feraco
Keyword(s):  
Type I ◽  
Type Ii ◽  
Review Of The Literature ◽  
Cmv Infection ◽  
Mri Findings ◽  
Splenial Lesion ◽  
First Case ◽  
Caucasian Child ◽  
Reversible Lesion ◽  
Children And Young Adults

AbstractMild encephalopathy with a reversible splenial lesion (MERS) is a clinico-radiological syndrome characterized by a transient mild encephalopathy and MRI findings of a reversible lesion in the splenium of corpus callosum (SCC). It is classified in MERS type I and MERS type II, depending on the involvement of SCC alone or also other white matter areas. The syndrome mainly affects children and young adults; the prognosis is favorable with complete or nearly complete neurological and radiological resolution within days or weeks. The vast majority of the cases described in the literature involve Asian and Australian children. The exact pathophysiology is unknown; however, infectious-related MERS (in particular virus associated MERS) remains the most common cause of reversible splenial lesions in childhood. To the best of our knowledge, there is only one published case of MERS associated with cytomegalovirus (CMV) infection involving an Australian child. We present here the first case of a CMV-related MERS in a European Caucasian child.

Heat-Etching with a Bullivant Type II Simple Freeze-Cleave Device

1970 ◽  
Vol 28 ◽  
pp. 106-107 ◽  
Author(s):  
Ronald S. Weinstein ◽  
N. Scott McNutt
Keyword(s):  
New Zealand ◽  
General Hospital ◽  
Massachusetts General Hospital ◽  
Type I ◽  
Type Ii ◽  
Collaborative Effort ◽  
Temperature And Pressure ◽  
The University

The Type I simple cold block device was described by Bullivant and Ames in 1966 and represented the product of the first successful effort to simplify the equipment required to do sophisticated freeze-cleave techniques. Bullivant, Weinstein and Someda described the Type II device which is a modification of the Type I device and was developed as a collaborative effort at the Massachusetts General Hospital and the University of Auckland, New Zealand. The modifications reduced specimen contamination and provided controlled specimen warming for heat-etching of fracture faces. We have now tested the Mass. General Hospital version of the Type II device (called the “Type II-MGH device”) on a wide variety of biological specimens and have established temperature and pressure curves for routine heat-etching with the device.

Labelling of non-A, non-B hepatitis infected chimpanzee hepatocytes with nuclease-gold conjugates

1984 ◽  
Vol 42 ◽  
pp. 250-251
Author(s):  
G. D. Gagne ◽  
M. F. Miller ◽  
D. A. Peterson
Keyword(s):  
Endoplasmic Reticulum ◽  
Experimental Infection ◽  
Uranyl Acetate ◽  
Type I ◽  
Cellular Injury ◽  
Type Ii ◽  
Tubular Structures ◽  
Type Iii ◽  
Type Iv ◽  
Infected Chimpanzee

Experimental infection of chimpanzees with non-A, non-B hepatitis (NANB) or with delta agent hepatitis results in the appearance of characteristic cytoplasmic alterations in the hepatocytes. These alterations include spongelike inclusions (Type I), attached convoluted membranes (Type II), tubular structures (Type III), and microtubular aggregates (Type IV) (Fig. 1). Type I, II and III structures are, by association, believed to be derived from endoplasmic reticulum and may be morphogenetically related. Type IV structures are generally observed free in the cytoplasm but sometimes in the vicinity of type III structures. It is not known whether these structures are somehow involved in the replication and/or assembly of the putative NANB virus or whether they are simply nonspecific responses to cellular injury. When treated with uranyl acetate, type I, II and III structures stain intensely as if they might contain nucleic acids. If these structures do correspond to intermediates in the replication of a virus, one might expect them to contain DNA or RNA and the present study was undertaken to explore this possibility.

Comparative surface and ultrastructural views of methylotrophic bacteria by TEM, STEM, SE, and freeze-etch electron microscopy.

1987 ◽  
Vol 45 ◽  
pp. 792-793
Author(s):  
T.A. Fassel ◽  
M.J. Schaller ◽  
M.E. Lidstrom ◽  
C.C. Remsen
Keyword(s):  
Cytoplasmic Membrane ◽  
Structural Features ◽  
Methylotrophic Bacteria ◽  
Type I ◽  
Type Ii ◽  
Membrane Complex ◽  
Oxidation Of Methane ◽  
Methane Oxidizing Bacteria ◽  
Wall Structures ◽  
Methylomonas Albus

Methylotrophic bacteria play an Important role in the environment in the oxidation of methane and methanol. Extensive intracytoplasmic membranes (ICM) have been associated with the oxidation processes in methylotrophs and chemolithotrophic bacteria. Classification on the basis of ICM arrangement distinguishes 2 types of methylotrophs. Bundles or vesicular stacks of ICM located away from the cytoplasmic membrane and extending into the cytoplasm are present in Type I methylotrophs. In Type II methylotrophs, the ICM form pairs of peripheral membranes located parallel to the cytoplasmic membrane. Complex cell wall structures of tightly packed cup-shaped subunits have been described in strains of marine and freshwater phototrophic sulfur bacteria and several strains of methane oxidizing bacteria. We examined the ultrastructure of the methylotrophs with particular view of the ICM and surface structural features, between representatives of the Type I Methylomonas albus (BG8), and Type II Methylosinus trichosporium (OB-36).

OPTICAL STUDIES OF TYPE I AND TYPE II RECOMBINATION IN GaAs-AlAs QUANTUM WELLS

1987 ◽  
Vol 48 (C5) ◽  
pp. C5-525-C5-528 ◽  
Author(s):  
K. J. MOORE ◽  
P. DAWSON ◽  
C. T. FOXON
Keyword(s):  
Quantum Wells ◽  
Type I ◽  
Type Ii ◽  
Optical Studies

An old friend is better than two new ones? Approaches to market research in the context of digital transformation for the antitrust laws enforcement

2020 ◽  
pp. 37-55 ◽  
Author(s):  
A. E. Shastitko ◽  
O. A. Markova
Keyword(s):  
Business Models ◽  
Rapid Development ◽  
Digital Transformation ◽  
Market Definition ◽  
Type I ◽  
Type Ii ◽  
Digital Platforms ◽  
Advantages And Disadvantages ◽  
Pass Through ◽  
Type Ii Errors

Digital transformation has led to changes in business models of traditional players in the existing markets. What is more, new entrants and new markets appeared, in particular platforms and multisided markets. The emergence and rapid development of platforms are caused primarily by the existence of so called indirect network externalities. Regarding to this, a question arises of whether the existing instruments of competition law enforcement and market analysis are still relevant when analyzing markets with digital platforms? This paper aims at discussing advantages and disadvantages of using various tools to define markets with platforms. In particular, we define the features of the SSNIP test when being applyed to markets with platforms. Furthermore, we analyze adjustment in tests for platform market definition in terms of possible type I and type II errors. All in all, it turns out that to reduce the likelihood of type I and type II errors while applying market definition technique to markets with platforms one should consider the type of platform analyzed: transaction platforms without pass-through and non-transaction matching platforms should be tackled as players in a multisided market, whereas non-transaction platforms should be analyzed as players in several interrelated markets. However, if the platform is allowed to adjust prices, there emerges additional challenge that the regulator and companies may manipulate the results of SSNIP test by applying different models of competition.

Sign in / Sign up

Export Citation Format

Share Document