Agreement Between Swept-source Optical Coherence Tomography and Rotating Scheimpflug Camera in Measurement of Corneal Parameters in Normal and Keratoconic Eyes

Purpose: This study aimed to assess the agreement between topographic indices of healthy subjects and keratoconus (KCN) patients using a swept-source optical coherence tomography (SS-OCT CASIA2) versus a Scheimpflug camera (Pentacam). Methods: 40 eyes of 23 patients with KCN and 40 eyes of 20 healthy subjects were included and evaluated with the CASIA2, followed by the Pentacam. Two consecutive modalities were obtained for one eye of each patient. Corneal parameters, including anterior keratometry at steep (Ks) and flat meridians (Kf), anterior astigmatism, anterior and posterior corneal elevation values, thinnest corneal thickness, and apex corneal thickness, were evaluated. Results: CASIA2 and Pentacam showed perfect agreement (95% limits of agreement (LoA): -0.22 to 0.68, 95% LoA: -1.5 to 1.44 D) and good correlation (Intraclass correlation (ICC):0.986, ICC:0.987; to 0.68, 95% LoA: -1.5 to 1.44 D) and good correlation (Intraclass correlation (ICC):0.986, ICC:0.987; P <0.01) for anterior (Ks) in normal and ectatic corneas, respectively. The cylinder amount had moderate agreement and correlation (95% LoA: -0.55 to 0.47D, ICC: 0.797, P <0.01) in normal, and moderate to strong agreement and correlation (95% LoA: -1.57 to 0.87D, ICC=0.911, P <0.01) in Keratoconic eyes. There was a fair agreement for anterior and posterior corneal elevation values in normal subjects (95% LoA: -3.09 to 4.59, 95% LoA: -6.91 to 7.31D). The thinnest corneal thickness amount had an excellent agreement in normal and KCN patients (ICC: 0.983, 0.953; respectively). Conclusions: Although the devices had different mean indices values, they had a good agreement based on the Bland–Altman plots. Since Pentacam is accepted as the standard tool for diagnosing ectatic cornea, pentacam CASIA2 is also helpful for early diagnosis of KCN

Effects of organic fertilizers and drought stress on Physiological traits in barley

Abstract Stress the most important factor limiting agricultural production in arid and semi-arid systems is considered. Distribution of rainfall in these areas (arid semi-arid), sometimes not consistent with crop needs and develop products that are temporary or prolonged drought. To study the effects of spray irrigation on winter barley trial at year 2011 in the field region of Damghan. These Split plot experiment in randomized complete block design with three replications. ) was. Rates Protein affected foliar Humax + Biomin both normal irrigation and water deficit stress conditions (41BBCH) solution were (11.42% and 11.53%) most of the proteins themselves. The study found that proline Nusrat victory both in normal irrigation and deficit stress conditions (41BBCH) , without spray (control) solution were (63.03 μmol/g and 80.33 μmol/g) more proline compared to other treatments showed. Farmers to increase their performance today acre foliar spray methods are used for fertilization. Foliar spray of plant response to fertilizer is fast methods. This approach makes the environment by fertilizing it in order to achieve sustainable agriculture is also very helpful. It was found that the variety kavir of normal watering with foliar Humax + Biomin potassium levels showed more than other treatments. The different effects on different plants using soil dry organic fertilizer such as Humax and Biomin can be drought resistant plants to rise

The application of nanoparticles on the yield and nutritional quality of rice under different irrigation regimes

The amino acid profile in rice serves as an indicator of its nutritional worth, playing a significant role in evaluating its overall nutritional quality. However, there has been limited research on how nanoparticles (NPs) and various irrigation regimes affect the nutritional value and overall quality of rice. In the present study, the effects of different irrigation regimes and foliar spray of NPs on the yield, nutrient concentration, and amino acid profile of milled rice in two rice cultivars were evaluated. The results showed that the Shirodi cultivar had a higher yield and nutrients compared to the Hashemi cultivar. Reducing irrigation significantly lowered the grain yield, nutrient elements, and some amino acids (asparagine, glutamic acid, serine, alanine, histidine, and arginine) in milled rice while increasing other amino acids. However, NPs treatments, especially ZnONPs + SiO2NPs treatment, increased grain yield and amino acids in milled rice. Regarding mineral nutrients, SiO2NPs and ZnONPs + SiO2NPs treatments decreased mineral nutrients in milled rice, while ZnONPs treatment increased Ca, Fe, Mg, and N and decreased the content of other elements in milled rice. Therefore, our findings showed that SiO2NPs and ZnONPs are promising NPs that can improve the yield and nutritional quality of milled rice, especially in water-deficient conditions. HIGHLIGHTS Reduction of irrigation decreased the yield and nutritional value of milled rice.; Different irrigation regimes caused changes in essential and non-essential amino acid profiles.; The use of NPs improved the yield and nutritional quality of milled rice in both rice cultivars.