scholarly journals An Antimethanogenic Nutritional Intervention in Early Life of Ruminants Modifies Ruminal Colonization by Archaea

Archaea ◽  
2014 ◽  
Vol 2014 ◽  
pp. 1-12 ◽  
Author(s):  
Leticia Abecia ◽  
Kate E. Waddams ◽  
Gonzalo Martínez-Fernandez ◽  
A. Ignacio Martín-García ◽  
Eva Ramos-Morales ◽  
...  

The aim of this work was to study whether feeding a methanogen inhibitor from birth of goat kids and their does has an impact on the archaeal population colonizing the rumen and to what extent the impact persists later in life. Sixteen goats giving birth to two kids were used. Eight does were treated (D+) with bromochloromethane after giving birth and over 2 months. The other 8 goats were not treated (D−). One kid per doe in both groups was treated with bromochloromethane (k+) for 3 months while the other was untreated (k−), resulting in four experimental groups: D+/k+, D+/k−, D−/k+, and D−/k−. Rumen samples were collected from kids at weaning and 1 and 4 months after (3 and 6 months after birth) and from does at the end of the treating period (2 months). Pyrosequencing analyses showed a modified archaeal community composition colonizing the rumen of kids, although such effect did not persist entirely 4 months after; however, some less abundant groups remained different in treated and control animals. The different response on the archaeal community composition observed between offspring and adult goats suggests that the competition occurring in the developing rumen to occupy different niches offer potential for intervention.

2021 ◽  
Vol 39 (15_suppl) ◽  
pp. e13617-e13617
Author(s):  
Lorenzo Calvetti ◽  
Francesca Simionato ◽  
Alessandro Cappetta ◽  
Francesca La Russa ◽  
Roberta Cimenton ◽  
...  

e13617 Background: After the results of the Nurse-led Telephone Triage (NTT) study ( Calvetti L, et al. ASCO 2020), the system has been implemented to prevent unnecessary hospitalizations of cancer patients. With the pandemic outbreak, a dedicated SARS-CoV-2 2019 (COVID-19) NTT protocol was added to monitor cancer patients (CPs) receiving active medical treatment. We report on the impact of NTT in limiting accesses and minimizing the risk of spread of the infection through the Department of Oncology. Methods: CPs on active medical treatment were educated to call the NTT in case of any symptoms suspected for COVID-19 infection to the Oncology Department of Vicenza, Italy, during the COVID-19 pandemic (February 22 2020 to January 31, 2021). Each event assessment was performed by trained oncology nurses with the supervision of a medical oncologist on duty and in case of suspected COVID-19 infection a testing pathway for COVID-19 was activated. Primary endpoint of this study was to compare incidence of COVID-19 and related deaths in both CPs on active medical treatment and health workers with the rate in the overall population of Veneto region. Results: From February 22 2020 to January 31, 2021 1,154 patients received systemic anticancer treatment (versus 1,022 patients in the same 2019 – 2020 period). Total consultations at NTT were 587; 97 patients reported symptoms suspected for COVID-19 infections. The COVID-19 testing pathway was launched in 60 CPs and a positive test was reported in 25 CPs (2.2% incidence compared to 6.5% in the overall Veneto region population). Two COVID-19 related deaths were reported (8% death rate). In the same period, 2/54 (3.7%) health workers tested positive for COVID-19. Patients who tested positive had a median treatment delay of 25 days. Conclusions: The NTT system in the clinical practice provided a useful tool for monitoring and limiting hospital-acquired COVID-19 infection among both CPs on active treatment and health workers.


1983 ◽  
Vol 36 (1) ◽  
pp. 74-80
Author(s):  
M. G. Pearson

Estimation methods and filtering techniques are nowadays an integral part of any computer-based navigation system. The purpose of these techniques is to provide an estimate of required variables which is sufficiently accurate for real-time command and control purposes. Repeatability, which is important for so many applications, is deemed to be a by-product of the estimation process. For this requirement it is not strictly necessary for the process to be accurate, it is sufficient if it is only consistent; these are closely linked but one does not imply the other. The modern approach is to minimize the variance of the noisy observations or the sum of the squares of the residuals, and the methods available for doing this are increasingly refined. The impression given in the literature (and it is extensive) is that data processing can somehow compensate for the shortcomings of the basic sensors with respect to the operation being considered. Within certain limits this is true, but the real reason for the sudden surge of Kalman filtering for real-time on-line applications was the relative simplicity of the computational process. In a way, Kalman filtering has done for estimation theory what the Fast Fourier Transform has done for spectral analysis.The concept is simple enough to state. It consists of combining two independent estimates of a variable to form a weighted mean. One of these estimates is a forecast and the other is the current measurement.


2019 ◽  
Vol 86 (4) ◽  
pp. 470-476 ◽  
Author(s):  
Flavio Tidona ◽  
Marco Bernardi ◽  
Salvatore Francolino ◽  
Roberta Ghiglietti ◽  
Johannes A. Hogenboom ◽  
...  

AbstractWith the aim to reduce the Na content, hard cheeses manufactured using the same technology as for Grana cheese (Grana-type) were salted using three brines containing different amounts of KCl (K-brines) and compared with control cheeses, salted with marine NaCl. A lower weight loss was observed in cheeses salted with K-brines (K-cheeses), whereas the yield and dry matter did not differ significantly between K-cheeses and controls. After 3 months of ripening (T3), the distribution of the Na cations (Na) was centripetal, with a higher Na concentration in the outer (0–3 cm of depth) layer, whereas the K cations (K) seemed to diffuse into the cheese more rapidly and homogeneously. Starting from the 6th month (T6), the distribution of both Na and K was stabilized through the different cheese layers. The use of the brine with the highest concentration of potassium (53.8% K) enabled us to successfully halve the Na content compared to the controls whereas, with the other brines, the reduction of Na was below 30%. At the end of ripening (T9), all the cheeses were without defects and the partial substitution of Na with K did not impact on the chemical composition, microbiological characteristics and ripening process. The sensory evaluation did not show any difference between K-salted and control cheeses in discriminant analysis.


2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Daha Garba Muhammad ◽  
Jamila Suleiman Musa

PurposeThis study aimed to explain the impact of the corona virus disease 2019 (COVID-19) pandemic on physiotherapy services in Nigeria.Design/methodology/approachThis is a commentary piece.FindingsThe pandemic has potential of reducing efficacy of physiotherapy services. It also showed that the mental health of local physiotherapists was badly affected. On the other hand, the pandemic allowed physiotherapists to support infectious disease prevention and control and as well as providing awareness of the role of physiotherapy in the management of respiratory diseases.Originality/valueIt shows the effect of COVID-19 on physiotherapy care.


Author(s):  
Francesca Giardini ◽  
Rafael Wittek

Gossip is often invoked as playing a fundamental role for creating, sustaining, or destroying cooperation. The reason seems straightforward: gossip can make or break someone’s reputation. This chapter puts this standard reputational model to closer scrutiny. It argues that there are at least three other models to consider, and it presents an analytical framework to disentangle similarities and differences between these models. Explicating all three roles in the gossip triad, it allows to distinguish (a) individual motives behind gossiping, (b) its reputation effects on the actors, (c) the impact of gossip and reputation on the quality and sustainability of cooperation, and (d) the role of the context. Applying the framework reveals a deep divide between reputation and punishment models propagated by experimental economics and evolutionary psychology, on the one hand, and coalition and control models informed by sociology, on the other hand. The chapter discusses implications for a sociological research agenda.


2016 ◽  
Vol 29 (2) ◽  
pp. 167-190 ◽  
Author(s):  
Svetlana Kosterina

Why do elites in some authoritarian regimes but not others remove from power the leaders who harm their interests? We develop a formal theory explaining this. The theory shows how elites’ ambition prevents them from controlling authoritarian leaders. Because ambitious elites are willing to stage coups to acquire power even when the leader is good, ambition renders elites’ claims that the leader’s actions harm them less credible, making the other elites less likely to support coups. We show that the impact of the proportion of competent politicians on personalist regimes is non-monotonic: personalist regimes are most likely to emerge not only when there are few competent politicians but also when there are lots of them. We also provide insight into which elites become coup-plotters. The theory explains the emergence of personalist regimes, the frequency of coups, and why some authoritarian countries enjoy a more competent leadership than others.


2016 ◽  
Vol 13 (4) ◽  
pp. 117-133 ◽  
Author(s):  
Krassimira ILIEVA-MAKULEC ◽  
Dawid KOZACKI ◽  
Grzegorz MAKULEC

The aim of the study was to assess the influence of corvid urban roosts on the abundance of two groups of soil mesofauna: mites and springtails. Two areas located in the city of Warsaw were taken into consideration, one subjected to winter roosting activity of corvids and the other not influenced by birds. The samples were taken three times, in May, July, and September of 2013. The results show a positive effect of corvid roosts on the density of soil mesofauna, especially in the top 0–5 cm soil layer. On each sampling date, we found more numerous communities of mites and springtails in the soil within the roosting area than in control. The average densities ofmites ranged from 30×103 ind. m–2 to 200×103 ind. m–2 in the soil within the roost and from 6 ×103 ind. m–2 to 40×103 ind. m–2 in the control. In the case of springtails the average densities ranged from 9×103 ind. m–2 to 36×103 ind. m–2 in the roost and from 4×103 ind. m–2 to 8×103 ind. m–2 in the control. Among the two groups, mites prevailed over the springtails both in the soil of roost and control area. We inferred that the corvid roosting activity, involving mainly an excrement deposition on the soil surface, influences soil mesofauna indirectly


Author(s):  
Yanal Atallah Abu Darwish

This study aimed at revealing the impact of using the gradual elimination method on the direct and delayed achievement of the 7th Grade students in memorizing the required chapters in Quran in Alhosayneya area schools. The searcher has used the Semi-experimental subject to complete this study. The study sample consisted of 48 male and female students was divided into 2 groups, Empirical and control. The Empirical group used (the gradual elimination method memorizing the required chapters in Quran). Whereas, the control group used (the conventional method in memorizing the required chapters in Quran). The study results have shown the existence of a statistical indicative difference at the level (α=0.05) of both direct and delayed achievement in memorizing the required chapters in Quran using the gradual elimination method. On the other hand, there was no indicative differences at the level (α=0.05) of both direct and delayed achievement in memorizing the required chapters in Quran due to the gender variable or its reaction with the study method. The study had recommended adopting the gradual elimination method as one of the effective teaching approach in memorizing the required chapters.


Author(s):  
Erick Delgado Moya ◽  
Alain Pietrus ◽  
Sergio Muniz Oliva

Tuberculosis (TB) remains a major global health problem. We present a deterministic mathematical model for the study of the effectiveness of therapy in TB to determine the impact of HIV/AIDS and diabetes in the spread of the disease and drug resistance. Our model takes into account the relationships between TB, HIV/AIDS, and diabetes and we also study the behavior of multidrug-resistance (MDR-TB) and extensively drug-resistant (XDR-TB). The main mathematical and epidemiology features of the model are investigated. The basic reproduction number (R0) in the different sub-populations (diabetics, HIV/AIDS, and those who do not suffer from these diseases) was studied. Conditions were obtained on the model parameters to know when the growth of the parameters associated with resistance to TB treatment has a negative impact on the transmission of TB in the population based on the R0 study. It is concluded that MDR-TB and XDR-TB have a negative impact on TB control. Computational simulations show that a greater number of drug-sensitive TB cases with respect to MDR-TB and XDR-TB cases are reported in the infected compartments, and MDR-TB cases surpass XDR-TB cases, except in the diabetes sub-population, which has a growth of XDR-TB cases that surpasses the other compartments of infected of all the sub-populations. It was shown when comparing the sub-populations of diabetes and HIV/AIDS, that although the diabetes sub-population reports a higher number of XDR-TB cases, a lower number of drug-sensitive TB and MDR-TB cases, have a greater number of recovered cases with respect to HIV/AIDS sub-population at the end of the study period. Also, when the XDR-TB cases in the diabetes sub-population exceed the other infected compartments, there is a growth of recovered TB in this subpopulation. The results suggest that it is necessary to increase the attention to the diabetic population, which include improved glucose control, increase the number of specialized medical consultations to achieve permanence in TB treatment and control the entry of individuals to the diabetic compartments by tests of diabetes.


2011 ◽  
Vol 70 (1) ◽  
pp. 5-11 ◽  
Author(s):  
Beat Meier ◽  
Anja König ◽  
Samuel Parak ◽  
Katharina Henke

This study investigates the impact of thought suppression over a 1-week interval. In two experiments with 80 university students each, we used the think/no-think paradigm in which participants initially learn a list of word pairs (cue-target associations). Then they were presented with some of the cue words again and should either respond with the target word or avoid thinking about it. In the final test phase, their memory for the initially learned cue-target pairs was tested. In Experiment 1, type of memory test was manipulated (i.e., direct vs. indirect). In Experiment 2, type of no-think instructions was manipulated (i.e., suppress vs. substitute). Overall, our results showed poorer memory for no-think and control items compared to think items across all experiments and conditions. Critically, however, more no-think than control items were remembered after the 1-week interval in the direct, but not in the indirect test (Experiment 1) and with thought suppression, but not thought substitution instructions (Experiment 2). We suggest that during thought suppression a brief reactivation of the learned association may lead to reconsolidation of the memory trace and hence to better retrieval of suppressed than control items in the long term.


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