On Nonadaptive Search Problem

2000 Mathematics Subject Classification: 91A46, 91A35.We consider nonadaptive search problem for an unknown element x from the set A = {1, 2, 3, . . . , 2^n}, n ≥ 3. For fixed integer S the questions are of the form: Does x belong to a subset B of A, where the sum of the elements of B is equal to S? We wish to find all integers S for which nonadaptive search with n questions finds x. We continue our investigation from [4] and solve the last remaining case n = 2^k , k ≥ 2

On a Two-Dimensional Search Problem

In this article we explore the so-called two-dimensional tree− search problem. We prove that for integers m of the form m = (2^(st) − 1)/(2^s − 1) the rectangles A(m, n) are all tight, no matter what n is. On the other hand, we prove that there exist infinitely many integers m for which there is an infinite number of n’s such that A(m, n) is loose. Furthermore, we determine the smallest loose rectangle as well as the smallest loose square (A(181, 181)). It is still undecided whether there exist infinitely many loose squares

Fetal fibronectin FFN. Biochemical markers of preterm birth

The use of biochemical markers for predicting preterm birth has a potential advantage because it provides direct evidence of changes in the extracellular matrix of the surface between fetal membranes and decidual tissue.  [1, 12] fFN is a protein that is produced during pregnancy and acts as a biological glue such as the amniotic sac kept attached to the endometrium. fFN can be found in cervico-vaginal secretions up to 22 weeks and late in the last trimester. [7] The purpose of this study is to determine the level of fetal fibronectin (fFN) in cervical mucus as a specific indicator of preterm birth in pregnant women with clinical symptoms. The study was attended by 90 women divided into two groups. First group of pregnant women at term gestation 24-34 weeks with clinical symptoms the PB and the second group of pregnant women with normal pregnancy occurs. In all women was conducted Full Term Test. The results were statistically processed by using SPSS v. 17. The presence of symptoms of preterm labor showed difference in the percentage of positive results of fFN test (p <0.05), women with clinical symptoms have - a high percentage of positive tests. When conducting Full term pregnancy test with positive results in the highest percentage with overt clinical RTD, Roma and second and third birth. Furthermore, pregnant women with a positive test result mainly born at 35 weeks, newborns weighed an average of 2 550.1 g, which explicitly includes them in the premature population

A newly-found inscribed funerary altar from the territory of Parthicopolis

The subject of this communication is a funerary altar discovered in 2022 during archaeological field survey in the Sandanski area. The monument was found at site 58, situated in the locality “Saint Dimitria” near the village of Leshnitsa, municipality of Sandanski. The site is a settlement from the Roman period (2nd–4th c. AD) and the Middle Ages (13th–14th c. AD), occupying a natural, flat floodplain terrace north of the Leshnishka River, covering an area of 5.8 decares. The monument is a funerary altar, possibly exhibiting traces of an unfinished verse-inscription in Greek, dated to the second half of the 2nd c. or the beginning of the 3rd c. AD. The Leshnitsa funerary altar joins the small group of funerary epigraphy from the Middle Strymon region, whence two other examples of the same type from nearby Heraclea Sintica are also dated to the second half of the 2nd c. or the beginning of the 3rd c. AD. The funerary altar from Leshnitsa constitutes the first such example from the territory of Parthicopolis, a Trajanic or early Hadrianic foundation of AD 117–120

Relation between Chlamydia trachomatis, the trophoblast and preterm delivery

There is a connection between preterm labor and intrauterie infections which is well established in up to 40% of cases. Success of the interaction between the invading trophoblast at the maternal-fetal interface and the maternal immune system is an immunologically unique fact. In this process the trophoblast participates in both the immune suppression which is necessary for tolerance to the semialogenic fetus and the immune activation against damaging factors such as infections. Alterations in this type of cross-talk, as in the cases of infection-triggered inflammation by Chlamydia species, could result in pregnancy complications such as prematurity or spontaneous abortion.Related articles and clinical cases have been gathered and reviewed to establish the main mechanisms and to confirm the relationship between preterm labor and Chlamydia trachomatis infection

NA61/SHINE facility at the CERN SPS: beams and detector system

NA61/SHINE (SPS Heavy Ion and Neutrino Experiment) is a multi-purpose experimental facility to study hadron production in hadron-proton, hadron-nucleus and nucleus-nucleus collisions at the CERN Super Proton Synchrotron. It recorded the first physics data with hadron beams in 2009 and with ion beams (secondary 7Be beams) in 2011. NA61/SHINE has greatly profited from the long development of the CERN proton and ion sources and the accelerator chain as well as the H2 beamline of the CERN North Area. The latter has recently been modified to also serve as a fragment separator as needed to produce the Be beams for NA61/SHINE. Numerous components of the NA61/SHINE set-up were inherited from its predecessors, in particular, the last one, the NA49 experiment. Important new detectors and upgrades of the legacy equipment were introduced by the NA61/SHINE Collaboration. This paper describes the state of the NA61/SHINE facility - the beams and the detector system - before the CERN Long Shutdown I, which started in March 2013