To send content items to your account,
please confirm that you agree to abide by our usage policies.
If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account.
Find out more about sending content to .
To send content items to your Kindle, first ensure email@example.com
is added to your Approved Personal Document E-mail List under your Personal Document Settings
on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part
of your Kindle email address below.
Find out more about sending to your Kindle.
Note you can select to send to either the @free.kindle.com or @kindle.com variations.
‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi.
‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
The Empire of Aksum was one of Africa's most influential ancient civilisations. Traditionally, most archaeological fieldwork has focused on the capital city of Aksum, but recent research at the site of Beta Samati has investigated a contemporaneous trade and religious centre located between Aksum and the Red Sea. The authors outline the discovery of the site and present important finds from the initial excavations, including an early basilica, inscriptions and a gold intaglio ring. From daily life and ritual praxis to international trade, this work illuminates the role of Beta Samati as an administrative centre and its significance within the wider Aksumite world.
This book offers a new interpretation of the spatial-political-environmental dynamics of water and irrigation in long-term histories of arid regions. It compares ancient Southwest Arabia (3500 BC–AD 600) with the American West (2000 BC–AD 1950) in global context to illustrate similarities and differences among environmental, cultural, political, and religious dynamics of water. It combines archaeological exploration and field studies of farming in Yemen with social theory and spatial technologies, including satellite imagery, Global Positioning System (GPS), and Geographic Information Systems (GIS) mapping. In both ancient Yemen and the American West, agricultural production focused not where rain-fed agriculture was possible, but in hyper-arid areas where massive state-constructed irrigation schemes politically and ideologically validated state sovereignty. While shaped by profound differences and contingencies, ancient Yemen and the American West are mutually informative in clarifying human geographies of water that are important to understandings of America, Arabia, and contemporary conflicts between civilizations deemed East and West.
The initial assessment of critical patients includes prompt identification of life-threatening conditions. Any device or technique that can aid in this process may ultimately save lives. This study examined whether clothing could be removed faster with the use of a hooked cutting device as compared with the commonly-used heavy-duty, blunt-tipped, serrated scissors.
This study took place in an urban academic emergency department of a Level-1 trauma center. Human patient simulator mannequins were clothed in identical shirts and pants. The time required for clinical personnel to expose the patient using each device was measured. Each of the 50 participants was queried regarding their tactile comfort using each device.
The mean time for shirt removal using scissors was 83 seconds (SD = 55 seconds; 95% CI, 68-99). The mean time for shirt removal using the hook device was 28 seconds (SD = 21 seconds; 95% CI, 22-34). The mean time for pants removal using scissors was 69 seconds (SD = 40 seconds; 95% CI, 56-73). The mean time for pants removal using the hook device was 19 seconds (SD=15 seconds; 95% CI, 15-23).
The hooked device was 69% faster at removing clothing than traditionally-used scissors. Though simple in concept, these implications can be life saving, particularly in conditions of uncontrolled, life-threatening external hemorrhage.
TangN, LevyM, HarrowJ, BinghamN. Use of a Hooked Cutting Device Compared With Scissors for the Emergency Exposure of Critically Ill and Injured Patients. Prehosp Disaster Med. 2013;28(6):1-4.
The Horn of Africa and Southwest Arabia are less than 30 km apart, yet the timing and nature of transitions to agriculture along the margins of the southern Red Sea differ substantially. This paper compares and contrasts the beginnings of agriculture in highland Ethiopia/Eritrea and Yemen. We evaluate the applicability of general models, emphasize social circumstances and particularities, and highlight the importance of differing spatiotemporal scales from interregional perspectives that address millennia-long changes across continents to local choices during human lifetimes. We consider why agriculture appears so much later than it does throughout the eastern Mediterranean and argue that the traditionally rigid distinction between the "origins" and "spread" of agriculture oversimplifies transitions along the southern Red Sea in which agriculture in some ways diffused to, and in other ways, uniquely originated in Southwest Arabia and the Horn of Africa. We concordantly maintain that, particularly when agriculture is considered a societal transformation, regions where agriculture appears comparatively later are as important to understanding transitions to agriculture as regions where agriculture appears earliest.
Voltage-gated potassium channel antibody encephalopathy, a rare cause of
limbic encephalopathy, typically presents with memory impairment and
seizures. Psychiatric symptoms have not been emphasised in the literature.
Here we describe a 58-year-old man who presented with panic attacks and
psychogenic non-epileptic seizures and, later on, developed delusions and
hallucinations and then confusion. He was found to have antibodies to
voltage-gated potassium channels. Treatment with immuno-modulatory therapy
resulted in almost complete recovery.
Recent evidence suggests that HIV-seropositive drug
users are impaired on tasks of visuospatial working
memory compared with drug users seronegative for HIV. In
the current study we evaluated the performance of 30 HIV-seropositive
male drug users and 30 risk-matched seronegative controls
on two measures of verbal working memory, the Listening
Span and the verbal Self Ordered Pointing Task. Impaired
working memory performance was significantly more common
among HIV-seropositive persons compared to controls, with
the highest incidence of deficit among symptomatic participants.
These findings indicate that working memory deficits in
persons with HIV are not domain-specific and can be demonstrated
reliably in drug users. (JINS, 2000, 6,