A new species of the genus Aiolopus Fieber (Oedipodinae: Acrididae) from Libya

A new species, Aiolopus obariensis sp. n., is described and illustrated from Fezzan Province, Libya. Besides other differentiating characters, the new species is characterized by having a conspicuously short and club-shaped left antenna. A description and a key to Libyan species of Aiolopus Fieber is provided. Some additional characters of male and female genitalia have also been incorporated

Implementation of storytelling with doll rock to improve the ability to own stories in Indonesian learning

The skill of listening to stories is a very important language skill. Story listening skills aim to improve the communicative aspect. Improving story listening skills needs to be improved by using appropriate learning approaches and methods. Learning methods that can not only condition the atmosphere of learning but intensive steps that are directly related to listening to stories. One method that can be used in learning to listen to stories is to apply storytelling. The problems that arise are how to improve the skills of listening to stories using puppet media by applying storytelligence, as well as how changes in student behavior after storytelling are applied in learning. The purpose of this study was to describe the improvement of story listening skills and changes in student behavior during learning by applying storytelling

Applications Of Physical Unclonable Functions on ASICS and FPGAs

With the ever-increasing demand for security in embedded systems and wireless sensor networks, we require integrating security primitives for authentication in these devices. One such primitive is known as a Physically Unclonable Function. This entity can be used to provide security at a low cost, as the key or digital signature can be generated by dedicating a small part of the silicon die to these primitives which produces a fingerprint unique to each device. This fingerprint produced by a PUF is called its response. The response of PUFs depends upon the process variation that occurs during the manufacturing process. In embedded systems and especially wireless sensor networks, there is a need to secure the data the collected from the sensors. To tackle this problem, we propose the use of SRAM-based PUFs to detect the temperature of the system. This is done by taking the PUF response to generate temperature based keys. The key would act as proofs of the temperature of the system. In SRAM PUFs, it is experimentally determined that at varying temperatures there is a shift in the response of the cells from zero to one and vice-versa. This variation can be exploited to generate random but repeatable keys at different temperatures. To evaluate our approach, we first analyze the key metrics of a PUF, namely, reliability and uniqueness. In order to test the idea of using the PUF as a temperature based key generator, we collect data from a total of ten SRAM chips at fixed temperatures steps. We first calculate the reliability, which is related to bit error rate, an important parameter with respect to error correction, at various temperatures to verify the stability of the responses. We then identify the temperature of the system by using a temperature sensor and then encode the key offset by PUF response at that temperature using BCH codes. This key-temperature pair can then be used to establish secure communication between the nodes. Thus, this scheme helps in establishing secure keys as the generation has an extra variable to produce confusion. We developed a novel PUF for Xilinx FPGAs and evaluated its quality metrics. It is very compact and has high uniqueness and reliability. We also implement 2 different PUF configurations to allow per-device selection of best PUFs to reduce the area and power required for key-generation. We also evaluate the temperature response of this PUF and show improvement in the response by using per-device selection

Numerical methods for approximating eigenvalues of boundary value problems

This paper describes some new finite difference methods for the approximation of eigenvalues of a two point boundary value problem associated with a fourth order linear differential equation of the type (py″)′​′−(qy′)′+(r−λs)y=0. The smallest positive eigenvalue of some typical eigensystems is computed to demonstrate the practical usefulness of the numerical techniques developed

Neurological complications in patients with plasmodium vivax malaria from Karachi, Pakistan

Background: Malaria remains an endemic disease in Pakistan with an estimated healthcare burden of 1.6 million cases annually, with Plasmodium vivax accounting for 67% of reported cases. P. vivax is the most common species causing malaria outside of Africa, with approximately 13.8 million reported cases worldwide. Method: We report a series of P. vivax cases with cerebral involvement that presented at Aga Khan University Hospital, Karachi, Pakistan. Results: The majority of the patients presented with high-grade fever accompanied by projectile vomiting and abnormal behaviour, seizures, shock and unconsciousness. Seven of 801 patients with P. vivax monoinfection presented or developed cerebral complications. P. vivax infections were diagnosed based on peripheral smears and rapid diagnostic testing. Conclusion: P. vivax infection can lead to severe complications, although not with the frequency of Plasmodium falciparum infection. Current cases highlight an increasing trend of cerebral complications caused by P. vivax

Crash helmet – the harbinger of death: a case report

In one of the rarest form of freak accident, a young woman surrendered to her death in a manner that belie the reality only to be played back in a slow motion sequence. History is replete of instances in which death struck individuals in otherwise innocent forms. In this case – elaborated below – a helmet tucked under the crook of an elbow became the undoing causing the woman to topple backward in a slow-motion, the head striking the hard surface of the road and precipitating her death later in a hospital

The role of natural products and their multitargeted approach to treat solid cancer

Natural products play a critical role in the discovery and development of numerous drugs for the treatment of various types of cancer. These phytochemicals have demonstrated anti-carcinogenic properties by interfering with the initiation, development, and progression of cancer through altering various mechanisms such as cellular proliferation, differentiation, apoptosis, angiogenesis, and metastasis. Treating multifactorial diseases, such as cancer with agents targeting a single target, might lead to limited success and, in many cases, unsatisfactory outcomes. Various epidemiological studies have shown that the steady consumption of fruits and vegetables is intensely associated with a reduced risk of cancer. Since ancient period, plants, herbs, and other natural products have been used as healing agents. Likewise, most of the medicinal ingredients accessible today are originated from the natural resources. Regardless of achievements, developing bioactive compounds and drugs from natural products has remained challenging, in part because of the problem associated with large-scale sequestration and mechanistic understanding. With significant progress in the landscape of cancer therapy and the rising use of cutting-edge technologies, we may have come to a crossroads to review approaches to identify the potential natural products and investigate their therapeutic efficacy. In the present review, we summarize the recent developments in natural products-based cancer research and its application in generating novel systemic strategies with a focus on underlying molecular mechanisms in solid cancer

Detection of typhoid carriers by duodenal fluid culture in a tertiary care hospital, Karachi: A cross-sectional study

We aimed to detect typhoid carriers by performing duodenal fluid culture in patients in a tertiary care hospital in Pakistan. A cross-sectional study was conducted during 2017 at the Aga Khan University Hospital, Karachi. Patients who underwent upper gastrointestinal endoscopy were included. Participants were interviewed, and duodenal fluid samples were taken for culture to detect Salmonella typhi (S. typhi) and paratyphi. A polymerase chain reaction on 100 randomly selected sub-samples was also conducted. A total of 477 participants were enrolled. The mean age was 42.4±15.5 years. History of typhoid fever was present in 73 (15.3%) participants. Out of the 477 duodenal fluid cultures tested for various micro-organisms, 250 (52.4%) were positive. Neither S. typhi nor paratyphi were isolated. S. typhi was also not detected by PCR. To better detect S. typhi carriage in general population, future studies should target people with gall bladder diseases and screen them using culture and PCR based methods