The Outer Hadron Calorimeter (HCAL HO) of the CMS detector is designed to measure the energy that is not contained by the barrel (HCAL HB) and electromagnetic (ECAL EB) calorimeters. Due to space...

All living organisms perceive mechanical signals, regardless of their taxonomic classifications or life habits. Because of their immobility, plants are influenced by a variety of environmental stresses, such as mechanical stress, during their growth and development. Plants develop physiological behaviors to adapt to their environment for long-term development and evolution. Sound-induced stress—an abiotic stress factor—is an example of mechanical stress and is caused by sound waves generated by different sources. This stress has a negative effect on the development and growth of plants. The strawberry plants evaluated in this study were exposed to three different sound intensity levels (95, 100, 105 dB) at a constant frequency of 1000 Hz. In strawberry plants, stress induced by sound waves is thought to trigger increased production of secondary metabolites as a defense mechanism. To determine the effect of sound applications, the fresh and dry weights of the roots and shoots were measured in strawberry plants, and the pH, total soluble solids (Brix), titratable acidity, vitamin C, total sugar, total acid, and total phenols were analyzed in the fruits. Results show that the sound stress, which was produced at a constant frequency (1000 Hz) and different sound levels (95, 100, 105 dB), affects the growth parameters of the plant and several quality parameters of the fruit.

The Effect of Sound Waves at Different Frequencies upon the Plant Element Nutritional Uptake of Snake Plant (Sansevieria Trifasciata) Plants

The current study provides training to parents and teachers about pediculosis in schools in three villages in Adana to measure their knowledge level by conducting surveys and to determine the prevalence of pediculosis in these foci. Pre- and post-questionnaires including 30 questions about pediculosis were handed to parents and teachers. The answers were analyzed with the Pearson correlation analysis. Overall, 418 school pupils s were examined for lice. The results of the head louse control were analyzed by the chi-square test and t-test. We observed that the level of awareness increased in parents and teachers. Additionally, the gender of both teachers and parents was determined as the most important factor in increasing this awareness. Because of interventions for the control of head and lice, the prevalence of pediculosis decreased from 15.22% to 1.71%. It is very important that parents and teachers are aware of the health problems related to pediculosis, while regular combing of school children may be essential for the control of this common infestation.

Amaç: Çalışmamızın amacı, Culex pipiens larvalarına farklı ses frekansları (ultrasonik değer altı ve üstü), uygulanarak, larvalar üzerindeki mortalite etkisini istatistiksel olarak araştırılmasıdır.Gereç ve Yöntem: Toplamda sekiz saat süren deneylerimizde, 3 farklı düzeyde (14,8 kHz, 20,0 kHz ve 26.5 kHz) ses frekansı üreten piezo transdüktörlü modifiye kaplarda bulunan 240 adet sivrisinek larvası kullanılmıştır. Bulgular: Denemelerimizde kullanılan toplam 240 Culex pipiens larvasının 121’i, uygulanan ses frekanslarının tümünde ölmüştür. İkinci evre larvalar, kullanılan ses frekanslarına hassasiyeti en fazla olan evre olarak tespit edilmiştir. Denememizde, 14,8 kHz’lik ultrasonik ses frekansının, en fazla mortaliteye neden olduğu saptanmıştır.Sonuç: Çalışmamızda kullandığımız ses frekansları (ultrasonik değer altı ve üstü) sivrisinek larvaları üzerinde değişen oranlarda mortal etkiler göstermiştir. Farklı mortalite değerleri, sivrisinek larvaları arasında akustik rezonans değerlerinin farklı olduğunu göstermektedir. Ayrıca erken evre larvalarda (L1 ve L2) mortalitenin yüksek olması çeşitli morfolojik sebeplerden meydana gelebilmektedir.