Anaesthesia in Oral Surgery

U oralnoj se kirurgiji većina zahvata radi u lokalnoj anesteziji, samo 5-10% zahtijeva opću anesteziju. Svrha našega istraživanja bile su indikacije i komplikacije anestezije. U retrospektivnoj studiji, tijekom 2002., analizirali smo anestezirane bolesnike s oralno kirurškim zahvatima u KB ”Dubrava”. 528 bolesnika promatrali smo u vezi sa zahvatom i vrstom anestezije. Zahvati u anesteziji bili su: vađenje zuba 306, popravka zuba 65, alveotomija 121, incizija u usnoj šupljini 36. Većinom djeca i odrasle osobe s duševnom retardacijom. Inhalacijskoj anesteziji podvrgli smo 298 bolesnika, u balansiranoj anesteziji bilo ih je 197 i u potpunoj intravenoznoj (TIVA) 33. Osnovne indikacije za anesteziju u našoj bolnici su osobe s duševnom retardacijom 231, djeca mlađa od 5 godina 140, odrasli 121, upala u usnoj šupljini s komplikacijama 36. Kod anestezije su se pojavile ove komplikacije: bronhospazam u dva bolesnika, aritmije u tri bolesnika, povraćanje u dvojice i izgubljeni zub u jednoga bolesnika (koji je nađen u jednjaku). Od svih zahvata u oralnoj kirurgiji 5,8% ih je učinjeno u općoj anesteziji i komplikacije su se pojavile u 1,6% anesteziranih bolesnika.The majority of procedures in oral surgery are performed in the local anaesthesia. Only 5-10% are performed in general anaesthesia. Indications and complications of anaesthesia were examined in our study. In a retrospective study, during 2002, we analysed patients with procedures in oral surgery in the University Hospital Dubrava. 528 patients were divided according to anaesthesia and procedure. We performed these procedures in anaesthesia: dental extractions 306, dental treatment 65, alveotomy 121, incision in the oral cavity 36. Most of them were children and persons with mental retardation. Inhalation anaesthesia was performed in 298 patients, balanced anaesthesia in 197 pts and TIVA in 33. The basic indications for anaesthesia in our hospital were: persons with mental retardation 231, children under 5 years of age 140, adult 121, inflammation of the oral cavity with complications 36. We had the following complications: bronchospasm in two cases, arrhythmia three cases, vomiting two cases and in one case lost tooth (it was found in oesophagi). Our results show that 5,8% of all procedures in oral surgery were in general anaesthesia and complications occured in 1.6 %

NMR studies of Successive Phase Transitions in Na0.5CoO2 and K0.5CoO2

59Co- and 23Na-NMR measurements have been carried out on polycrystalline and c-axis aligned samples of Na0.5CoO2, which exhibits successive transitions at temperatures T = 87 K (= Tc1) and T = 53 K (= Tc2). 59Co-NMR has also been carried out on c-axis aligned crystallites of K0.5CoO2 with similar successive transitions at Tc1 ~ 60 K and Tc2 ~ 20 K. For Na0.5CoO2, two sets of three NMR lines of 23Na nuclei explained by considering the quadrupolar frequencies nuQ ~1.32 and 1.40 MHz have been observed above Tc1, as is expected from the crystalline structure. Rather complicated but characteristic variation of the 23Na-NMR spectra has been observed with varying T through the transition temperatures, and the internal fields at two crystallographically distinct Na sites are discussed on the basis of the magnetic structures reported previously. The internal fields at two distinct Co sites observed below Tc1 and the 591/T1-T curves of Na0.5CoO2 and K0.5CoO2 are also discussed in a comparative way.Comment: 7 pages, 10 figures, submitted to J. Phys. Soc. Jpn, correction is made in right colum of p6 (35th line) as K0.5CoO2-->Na0.5CoO

Combined use of haemodialysis and haemoperfusion in the treatment of organophosphate poisoning

Prikazan je tijek bolesti trojice bolesnika otrovanih inhibitorima acetilkolinesteraze. Sva trojica bila su u stanju kome, a jedan je umjetno respiriran. Sva su trojica podvrgnuta postupku hemodijalize i hemoperfuzije jantarnom smolom istodobno i klinička se slika za kratko vrijeme poboljšala. Trombociti su nakon postupka iznosili prosječno 41% od ishodnih vrijednosti. Raspravlja se o nekim aspektima tih otrovanja.The paper deals with three cases of poisoning with cholinesterase inhibitors. All the three patients were in a comatous state. Simultaneous treatment with haemodialysis and XAD-4 haemoperfusion gave good results. The impairment of the coagulation mechanism poses the greatest disadvantage of this method which in some cases, however, is indispensable to save life

FUSION OF SENTINEL-2 AND PLANETSCOPE IMAGERY FOR VEGETATION DETECTION AND MONITORING

Different spatial resolutions satellite imagery with global almost daily revisit time provide valuable information about the earth surface in a short time. Based on the remote sensing methods satellite imagery can have different applications like environmental development, urban monitoring, etc. For accurate vegetation detection and monitoring, especially in urban areas, spectral characteristics, as well as the spatial resolution of satellite imagery is important. In this research, 10-m and 20-m Sentinel-2 and 3.7-m PlanetScope satellite imagery were used. Although in nowadays research Sentinel-2 satellite imagery is often used for land-cover classification or vegetation detection and monitoring, we decided to test a fusion of Sentinel-2 imagery with PlanetScope because of its higher spatial resolution. The main goal of this research is a new method for Sentinel-2 and PlanetScope imagery fusion. The fusion method validation was provided based on the land-cover classification accuracy. Three land-cover classifications were made based on the Sentinel-2, PlanetScope and fused imagery. As expected, results show better accuracy for PS and fused imagery than the Sentinel-2 imagery. PlanetScope and fused imagery have almost the same accuracy. For the vegetation monitoring testing, the Normalized Difference Vegetation Index (NDVI) from Sentinel-2 and fused imagery was calculated and mutually compared. In this research, all methods and tests, image fusion and satellite imagery classification were made in the free and open source programs. The method developed and presented in this paper can easily be applied to other sciences, such as urbanism, forestry, agronomy, ecology and geology

Activity to Breast Cancer Cell Lines of Different Malignancy and Predicted Interaction with Protein Kinase C Isoforms of Royleanones

Plants have been used for centuries to treat several illnesses. The Plectranthus genus has a vast variety of species that has allowed the isolation of cytotoxic compounds with notable activities. The abietane diterpenes 6, 7-dehydroroyleanone (DeRoy, 1), 7α-acetoxy-6β-hydroxyroyleanone (Roy, 2), and Parvifloron D (ParvD, 3) were obtained from Plectranthus spp. and showed promising biological activities, such as cytotoxicity. The inhibitory effects of the different natural abietanes (1-3) were compared in MFC7, SkBr3, and SUM159 cell lines, as well as SUM159 grown in cancer stem cell-inducing conditions. Based on the royleanones’ bioactivity, the derivatives RoyBz (4), RoyBzCl (5), RoyPr2 (6), and DihydroxyRoy (7), previously obtained from 2, were selected for further studies. Protein kinases C (PKCs) are involved in several carcinogenic processes. Thus, PKCs are potential targets for cancer therapy. To date, the portfolio of available PKC modulators remains very limited due to the difficulty of designing isozyme-selective PKC modulators. As such, molecular docking was used to evaluate royleanones 1-6 as predicted isozyme-selective PKC binders. Subtle changes in the binding site of each PKC isoform change the predicted interaction profiles of the ligands. Subtle changes in royleanone substitution patterns, such as a double substitution only with non-substituted phenyls, or hydroxybenzoate at position four that flips the binding mode of ParvD (3), can increase the predicted interactions in certain PKC subtype

TWO-STEP CAMERA CALIBRATION METHOD DEVELOPED FOR MICRO UAV'S

The development of unmanned aerial vehicles (UAVs) and continuous price reduction of unmanned systems attracted us to this research. Professional measuring systems are dozens of times more expensive and often heavier than "amateur", non-metric UAVs. For this reason, we tested the DJI Phantom 2 Vision Plus UAV. Phantom’s smaller mass and velocity can develop less kinetic energy in relation to the professional measurement platforms, which makes it potentially less dangerous for use in populated areas. In this research, we wanted to investigate the ability of such non-metric UAV and find the procedures under which this kind of UAV may be used for the photogrammetric survey. It is important to emphasize that UAV is equipped with an ultra wide-angle camera with 14MP sensor. Calibration of such cameras is a complex process. In the research, a new two-step process is presented and developed, and the results are compared with standard one-step camera calibration procedure. Two-step process involves initially removed distortion on all images, and then uses these images in the phototriangulation with self-calibration. The paper presents statistical indicators which proved that the proposed two-step process is better and more accurate procedure for calibrating those types of cameras than standard one-step calibration. Also, we suggest two-step calibration process as the standard for ultra-wideangle cameras for unmanned aircraft

INCREASE OF READABILITY AND ACCURACY OF 3D MODELS USING FUSION OF CLOSE RANGE PHOTOGRAMMETRY AND LASER SCANNING

The development of laser scanning technology has opened a new page in geodesy and enabled an entirely new way of presenting data. Products obtained by the method of laser scanning are used in many sciences, as well as in archaeology. It should be noted that 3D models of archaeological artefacts obtained by laser scanning are fully measurable, written in 1:1 scale and have high accuracy. On the other hand, texture and RGB values of the surface of the object obtained by a laser scanner have lower resolution and poorer radiometric characteristics in relation to the textures captured with a digital camera. Scientific research and the goal of this paper are to increase the accuracy and readability of the 3D model with textures obtained with a digital camera. Laser scanning was performed with triangulation scanner of high accuracy, Vivid 9i (Konica Minolta), while for photogrammetric recording digital camera Nikon D90 with a lens of fixed focal length 20 mm, was used. It is important to stress that a posteriori accuracy score of the global registration of point clouds in the form of the standard deviation was ± 0.136 mm while the average distance was only ± 0.080 mm. Also research has proven that the quality projection texture model increases readability. Recording of archaeological artefacts and making their photorealistic 3D model greatly contributes to archaeology as a science, accelerates processing and reconstruction of the findings. It also allows the presentation of findings to the general public, not just to the experts