Real-Time Remote Sensing of the Lobesia botrana Moth Using a Wireless Acoustic Detection Sensor

This article presents a wireless sensor for pest detection, specifically the Lobesia botrana moth or vineyard moth. The wireless sensor consists of an acoustic-based detection of the sound generated by a flying Lobesia botrana moth. Once a Lobesia botrana moth is detected, the information about the time, geographical location of the sensor and the number of detection events is sent to a server that gathers the detection statistics in real-time. To detect the Lobesia botrana, its acoustic signal was previously characterized in a controlled environment, obtaining its power spectral density for the acoustic filter design. The sensor is tested in a controlled laboratory environment where the detection of the flying moths is successfully achieved in the presence of all types of environmental noises. Finally, the sensor is installed on a vineyard in a region where the moth has already been detected. The device is able to detect flying Lobesia botrana moths during its flying period, giving results that agree with traditional field traps.

3D-Printed Replica and Porcine Explants for Pre-Clinical Optimization of Endoscopic Tumor Treatment by Magnetic Targeting

Background: Animal models have limitations in cancer research, especially regarding anatomy-specific questions. An example is the exact endoscopic placement of magnetic field traps for the targeting of therapeutic nanoparticles. Three-dimensional-printed human replicas may be used to overcome these pitfalls. Methods: We developed a transparent method to fabricate a patient-specific replica, allowing for a broad scope of application. As an example, we then additively manufactured the relevant organs of a patient with locally advanced pancreatic ductal adenocarcinoma. We performed experimental design investigations for a magnetic field trap and explored the best fixation methods on an explanted porcine stomach wall. Results: We describe in detail the eight-step development of a 3D replica from CT data. To guide further users in their decisions, a morphologic box was created. Endoscopies were performed on the replica and the resulting magnetic field was investigated. The best fixation method to hold the magnetic field traps stably in place was the fixation of loops at the stomach wall with endoscopic single-use clips. Conclusions: Using only open access software, the developed method may be used for a variety of cancer-related research questions. A detailed description of the workflow allows one to produce a 3D replica for research or training purposes at low costs.

All optical dynamic nanomanipulation with active colloidal tweezers

Manipulation of colloidal objects with light is important in diverse fields. While performance of traditional optical tweezers is restricted by the diffraction-limit, recent approaches based on plasmonic tweezers allow higher trapping efficiency at lower optical powers but suffer from the disadvantage that plasmonic nanostructures are fixed in space, which limits the speed and versatility of the trapping process. As we show here, plasmonic nanodisks fabricated over dielectric microrods provide a promising approach toward optical nanomanipulation: these hybrid structures can be maneuvered by conventional optical tweezers and simultaneously generate strongly confined optical near-fields in their vicinity, functioning as near-field traps themselves for colloids as small as 40 nm. The colloidal tweezers can be used to transport nanoscale cargo even in ionic solutions at optical intensities lower than the damage threshold of living micro-organisms, and in addition, allow parallel and independently controlled manipulation of different types of colloids, including fluorescent nanodiamonds and magnetic nanoparticles.

TINJAUAN GEOTEKTONIK SELAT MAKASSAR UTARA, IMPLIKASINYA TERHADAPPOTENSI HIDROKARBON LAUT DALAM CEKUNGAN KUTAI KALIMANTAN TIMUR

Selat Makassar Utara yang terletak di bagian tenggara tepi paparan Sunda antara pulau Kalimantan dan Sulawesi merupakan wilayah eksplorasi laut-dalam. Wilayah ini berdekatan dengan Cekungan Kutai yang umumnya endapan delta dan paparan. Cekungan Kutai Laut-dalam yang termasuk daerah Kalimatan Timur bagian offshore telah dieksplorasi dengan penemuan beberapa lapangan migas yang signifikan pada sedimen umur Pliosen dan Miosen Akhir. Penemuan lapangan migas tersebut yang tersebar di tiga blok yaitu Makassar Strait PSC, Rapak PSC dan Ganal PSC yang dikontrol oleh tektonik kompresi berarah barat barat-laut dan timur tenggara. Setting geotektonik Selat Makassar dimulai dari Eosen yang diakibatkan tarikan pada kerak yang berkembang ke arah baratdaya dari pusat pemekaran di Laut Sulawesi. Setelah awal tarikan pada Selat Makassar, permukaan horst dan graben pada fase awal Eosen tertutupi di atasnya oleh sedimen dari hasil proses penurunan cekungan selama Oligosen sampai Miosen. Pada Plio-Pleistosen di Selat Makassar terjadi perubahan dari tektonik tarikan menjadi kompresi. Perkembangan antiklin toe-thrust terbentuk pada tingkat perkembangan yang bervariasi selama Miosen – Pliosen menjadikan hydrokarbon play pada laut-dalam purba. Keadaan tersebut berpengaruh terhadap pengendapan batuan reservoir dan batuan induk, sejarah penurunan cekungan dan tentunya tipe pematangan batuan induk, jalur migrasi dan pada puncaknya adalah dihasilkannya banyak perangkap lapangan migas dari struktur toe-thrust. Kata kunci: geotektonik, Selat Makassar Utara, Cekungan Kutai, laut-dalam, reservoir The North Makassar Straits, located on the south-eastern margin of the Sundaland, between the islands of Kalimatan and Sulawesi, is an under-explored deepwater domain, adjacent to Kutai Basin which primarily coastal deltaic and shelfal deposits. Deepwater Kutei Basin, offshore East Kalimantan, has been explored with several significant hydrocarbon discoveries in Pliocene and Late Miocene sediments. The discoveries scattered in three blocks i.e., North Makassar Strait PSC, Rapak PSC and Ganal PSC controlled by compressional tectonics in W-NW and E-SE directions. Geotectonical setting of the Makassar Straits commenced during the Eocene in response to a crustal extension that propagated south-westwards from the Celebes Sea spreading centre. After initial opening of the Makassar Straits, early-phase Eocene horst and graben terrains were overlain by basinal sag sediments during the subsequent Oligocene to Miocene era. During the Plio-Pleistocene, prior extensional settings in the Makassar Straits that became compressional. The development of these toe-thrust anticlines has influenced the development of this Miocene-Pliocene palaeo-deep-water play in varying degree. This influence ranges from the deposition of reservoir, source, to subsidence history and thereby source rock maturity, migration routes and, ultimately, many of the field traps are generated by these toe-thrust structures. Key words: geotectonic, North Makassar Strait, Kutai basin, deepwater, reservoir

Flutuação Populacional de Rhynchophorus palmarum L. (Coleoptera: Curculionidae) em Plantios de Palma de Óleo em Roraima

Esta pesquisa teve como objetivo avaliar a flutuação populacional de Rhynchophorus palmarum L. (Coleoptera: Curculionidae) em plantios de Elaeis guineensis Jacq, em ecossistemas de savana e floresta no estado de Roraima. A pesquisa foi desenvolvida durante o período de janeiro de 2011 a fevereiro de 2012 nos campos experimentais da Embrapa Roraima: Monte Cristo e Caroebe, numa área de 2 hectares com a cultura da Palma de Óleo, em cada campo. Foram distribuídas armadilhas iscadas com roletes de cana-de-açúcar e feromônio de agregação para captura dos insetos no entorno dos plantios. Ocorreu flutuação de R. palmarum com picos populacionais nos meses de julho e agosto no ecossistema de savana e de abril a setembro no ambiente de floresta. A população de R. palmarum foi menor em meses de baixa precipitação pluviométrica nos dois ambientes avaliados com a Palma de Óleo em RoraimaPopulation Fluctuation of Rhynchophorus palmarum L. (Coleoptera: Curculionidae) in Plantations of Oil Palm in RoraimaAbstract. This research aimed to evaluate the population fluctuation Rhynchophorus palmarum L. (Coleoptera: Curculionidae) in Elaeis guineensis Jacq plantations in forest and savanna ecosystems in the state of Roraima. The research was conducted during the period from January 2011 to February 2012 in the experimental field of Embrapa Roraima: Monte Cristo and Caroebe in an area of 2 hectares with culture Oil Palm in each field. Traps baited with rollers cane sugar and aggregation pheromone for capturing insects in the vicinity of the plantations were distributed. Fluctuation occurred R. palmarum with population peaks in the months of July and August in the savanna ecosystem and from April to September in the forest environment. The population of R. palmarum was lower in months of low rainfall in the two environments assessed with a palm-oil-in Roraima.