Integrated photon pair source based on a silicon nitride micro-ring resonator for quantum memories.

We report the design of an integrated photon pair source based on spontaneous four-wave mixing (SFWM), implemented in an integrated micro-ring resonator in the silicon nitride platform (Si3N4). The signal photon is generated with emission at 606 nm and bandwidth of 3.98 MHz, matching the spectral properties of praseodymium ions (Pr), while the idler photon is generated at 1430.5 nm matching the wavelength of a CWDM channel in the E-band. This novel, to the best of our knowledge, device is designed to interact with a quantum memory based on a Y2SiO5 crystal doped with Pr3+ ions, in which we used cavity-enhanced SFWM along with dispersion engineering to reach the required wavelength and the few megahertz signal photon spectral bandwidth.

Design and fabrication of Mach-Zehnder interferometers in soda-lime glass for temperature sensing applications.

High sensitivity represents one of the main goals that sensing devices need to satisfy for their applications. This work presents to the best of our knowledge the first integrated Mach-Zehnder interferometer (MZI) embedded in soda-lime glass with comparable sensitivity to silicon-on-insulator (SOI) devices. We manufactured the MZIs by the femtosecond direct laser writing (FDLW) technique and characterized them with temperature. Four buried MZIs were manufactured by slightly increasing the optical path due to separation between the arms of the interferometer (Δ s). We achieved a fringe shift of ∼8n m for an increase of 0.18 µm. We have characterized one of these devices with temperature from 30°C to 70°C obtaining a sensitivity of ∼28p m/ ∘ C. We improved the sensitivity of the device to ∼54p m/ ∘ C due to the advantage of the unique three-dimensional (3D) capabilities that FDLW provides, overcoming the characteristically low thermo-optic coefficient of soda-lime glass just by rotating the MZI structure 11°.

Spray-driven halide exchange in solid-state CsPbX3 nanocrystal films.

CsPbI3 perovskite nanocrystals (NCs) are promising building blocks for photovoltaics and optoelectronics. However, they exhibit an essential drawback in the form of phase stability: α-phase, with a ∼1.80 eV bandgap, can easily experience a phase transition to a non-radiative orthorhombic δ-phase in an ambient environment. This leads to the need to carry out the CsPbI3-based device fabrication in an inert atmosphere, which is technologically inconvenient and expensive. One of the most successful approaches proposed to overcome this problem is synthesizing mixed halide CsPbBr3-xIx NCs to improve the stability of the α-phase perovskite structure. However, the formation of high-quality thin films of CsPbBr3-xIx NCs with high PLQY is challenging owing to the degradation of their optical properties after deposition on a substrate. This work presents spray coating to carry out a solid-state anion exchange in CsPbBr3 NCs thin films at ambient conditions with low-demanding reaction conditions. This constitutes a novel open-air and annealing-free technology to manufacture CsPbBr3-xIx NC thin films with high optical quality and record high photoluminescence quantum yields (PLQY) based on spray-driven halide (Br- to I-) anion exchange in a solid-state phase. Besides, tunable emission wavelengths between 520 and 670 nm can be obtained from CsPbBr3-xIx NC films using accurate tuning volumes of HI solution sprayed over the initial surface of CsPbBr3 film to provide the halide exchange. The optical quality of the halide-exchanged PNCs films remains practically identical to that of initial Br-containing layers, with a remarkable PLQY enhancement after anion exchange, from ∼61% for CsPbBr3 thin films emitting at 520 nm to ∼84% for mixed halide CsPbBr3-xIx film emitting at 640 nm. The huge potential of the system is confirmed by demonstrating a low-threshold amplified spontaneous emission.

Measurement of the Charge-Averaged Elastic Lepton-Proton Scattering Cross Section by the OLYMPUS Experiment.

We report the first measurement of the average of the electron-proton and positron-proton elastic scattering cross sections. This lepton charge-averaged cross section is insensitive to the leading effects of hard two-photon exchange, giving more robust access to the proton's electromagnetic form factors. The cross section was extracted from data taken by the OLYMPUS experiment at DESY, in which alternating stored electron and positron beams were scattered from a windowless gaseous hydrogen target. Elastic scattering events were identified from the coincident detection of the scattered lepton and recoil proton in a large-acceptance toroidal spectrometer. The luminosity was determined from the rates of Møller, Bhabha, and elastic scattering in forward electromagnetic calorimeters. The data provide some selectivity between existing form factor global fits and will provide valuable constraints to future fits.

Exposure to xenoestrogens alters the expression of key morphoregulatory proteins of oviduct adenogenesis in the broad-snouted caiman (Caiman latirostris).

Endocrine disrupting compounds (EDCs) are contaminants ubiquitously found in the environment, which pose a potential threat to aquatic and wetland ecosystems. Caiman latirostris, a crocodilian species that inhabits South American wetlands, is highly sensitive to EDC exposure. Previously, we reported that early postnatal exposure to EDCs such as Bisphenol A (BPA) and 17ß-Estradiol (E2) alters C. latirostris oviduct differentiation. The aim of this work was to elucidate the molecular mechanisms behind this alteration. To accomplish this, we established the ontogenic changes in histological features and the expression of Wnt-7a, Wnt-5a, ß-catenin, FoxA2, desmin, and alpha smooth muscle actin (α-SMA) in the oviduct of C. latirostris. Then, we evaluated the effects of BPA and E2 exposure on these histological features and protein expressions. Our results showed that during the postnatal differentiation of the oviduct the presence of histological features related to adenogenesis is associated with the levels of expression of FoxA2, ß-catenin, Wnt-5a and Wnt-7a. Early postnatal exposure to BPA and E2 decreased the presence of histological features related to adenogenesis and altered the levels of expression of FoxA2, ß-catenin, Wnt-5a and Wnt-7a, as well as the desmin/α-SMA ratio. These findings suggest that altered levels of Wnt-7a, Wnt-5a, ß-catenin and FoxA2 could play a role in the BPA and E2-induced alteration in oviduct differentiation in C. latirostris. Thus, impaired adenogenesis and, probably, impaired reproduction in wildlife naturally exposed to BPA and other estrogenic agonists cannot be completely ruled out.

Psychotic symptoms following oxycodone withdrawal, case report and update.

Opiate withdrawal-induced psychosis is an uncommon clinical manifestation. We present a 36-year-old male patient, with no prior personal or familiar psychiatric history, in treatment with several analgesic drugs (including oxycodone) for non-inflammatory chronic rachialgia. The patient is hospitalized after exhibiting psychotic symptomatology (delusions of harm and contamination, olfactory hallucinations, and aberrant behavior). This psychotic symptomatology first manifested after abruptly interrupting his prescribed oxycodone intake. It had a fluctuating course over time (alternating between lucid states and delusional ones) and eventually subsided after the prescription of antipsychotic drugs. In this case report, we describe the follow-up of the patient and discuss the influence and relevance of oxycodone withdrawal on the psychotic symptomatology.

Adaptación transcultural del instrumento Orthognathic Quality of Life questionnaire al español para el estudio de la calidad de vida de pacientes con anomalías dentofaciales. Fase I / Cross-cultural adaptation of the Spanish language versión of the Orthognathic Quality of Life questionnaire for the assesment of quality of life in dentofacial deformities. Phase I

Antecedentes: La cirugía ortognática es una opción terapéutica que busca parámetros de simetría, función masticatoria, respiratoria, e indirectamente mejorar el estado emocional de pacientes con anomalías dentofaciales. El instrumento Orthognathic Quality Of Life Questionnaire (OQLQ) permite realizar una evaluación subjetiva amplia y del nivel de calidad de vida pre y postquirúrgica, por lo que es necesario realizar el proceso de traducción al español y la adaptación cultural al contexto colombiano. Métodos: Posterior a la autorización del autor original se realizaron traducciones directas, obtención de una versión preliminar, traducciones inversas y una prueba piloto con 15 pacientes colombianos, mayores de 16 años, con anomalía dentofacial que asistieron al hospital de San José. Se aplicó la metodología del grupo de calidad de la European Organization for Research and Treatment of Cancer (EORTC) para garantizar que la versión en español de la escala sea equivalente conceptualmente a la original. Resultados: Las traducciones directas fueron consistentes, sin embargo, se hicieron ajustes para obtener la versión preliminar; las traducciones inversas fueron similares a la versión original de la escala. La prueba piloto, realizada en una muestra heterogénea de 15 pacientes, llevó al ajuste de la sintaxis de un ítem. De esta manera se obtuvo la versión en español del cuestionario que en fase posterior se validará. Conclusiones: La realización de este estudio permitió la adaptación de un cuestionario entendible en el contexto colombiano, garantizando una equivalencia lingüística y conceptual entre esta versión y la versión original

Introduction: Orthognathic surgery is a therapeutic option that seeks parameters of symmetry, masticatory function, breathing, and improves the emotional state of patients with dentofacial anomalies. The questionnaire Orthognathic Quality of Life Questionnaire (OQLQ) allows to make a subjective evaluation and the level of quality of life before and after surgery, so it is necessary to perform the translation into Spanish and the cultural adaptation to the Colombian context. Methods: After the authorization of the original author, direct translations were made obtaining a preliminary version, reverse translations and a pilot test was accomplished with 15 Colombian patients over 16 years of age with a dentofacial anomaly who attended the San José hospital in Bogotá. The methodology of the quality group of the European Organization for Research and Treatment of Cancer (EORTC) was applied to ensure that the Spanish version of the scale is conceptually equivalent to the original. Results: The direct translations were consistent, however, adjustments were made to obtain the preliminary version; the inverse translations were similar to the original version of the scale. The pilot test, carried out on a heterogeneous sample of 15 patients led to the adjustment of the syntax of one item. In this way, the Spanish version of the questionnaire was obtained. Conclusion: The realization of this study allowed the adaptation of an understandable questionnaire in the Colombian context, guaranteeing a linguistic and conceptual equivalence between this version and the original versión

First Observation of P-odd γ Asymmetry in Polarized Neutron Capture on Hydrogen.

We report the first observation of the parity-violating gamma-ray asymmetry A_{γ}^{np} in neutron-proton capture using polarized cold neutrons incident on a liquid parahydrogen target at the Spallation Neutron Source at Oak Ridge National Laboratory. A_{γ}^{np} isolates the ΔI=1, ^{3}S_{1}→^{3}P_{1} component of the weak nucleon-nucleon interaction, which is dominated by pion exchange and can be directly related to a single coupling constant in either the DDH meson exchange model or pionless effective field theory. We measured A_{γ}^{np}=[-3.0±1.4(stat)±0.2(syst)]×10^{-8}, which implies a DDH weak πNN coupling of h_{π}^{1}=[2.6±1.2(stat)±0.2(syst)]×10^{-7} and a pionless EFT constant of C^{^{3}S_{1}→^{3}P_{1}}/C_{0}=[-7.4±3.5(stat)±0.5(syst)]×10^{-11} MeV^{-1}. We describe the experiment, data analysis, systematic uncertainties, and implications of the result.

Disc repositioning plus temporal eminectomy for temporomandibular joint internal derangement: A pilot study.

INTRODUCTION: Temporomandibular joint internal derangement is a common disorder, which usually resolves with conservative management. However, 5% of patients require surgery and although many techniques have been described, a gold standard surgical procedure has not yet been established. OBJECTIVES: The aim of this study was to compare the clinical outcome of disc repositioning plus temporal eminectomy versus disc repositioning alone, for the treatment of temporomandibular joint internal derangement. METHODOLOGY: Matched case-control retrospective pilot study. Records of patients diagnosed with temporomandibular joint internal derangement from January 2010 to December 2015 were studied. Eleven patients treated with disc repositioning plus temporal eminectomy for the case group and 11 patients treated with disc repositioning alone for the age- and gender-matched control group. RESULTS: No difference was found in terms of pain, noise or blockage with the maximum oral opening between the groups at the first or sixth month after surgery. However, there were differences in movement restriction at the first and sixth month after surgery, in favor of the temporal eminectomy group. These differences were statistically significant only at the sixth month after surgery (P: 0.03). CONCLUSIONS: Our results suggest that disc repositioning plus temporal eminectomy could be a short-term benefit in terms of mobility and oral opening. However, larger samples and prospective trials will be necessary to corroborate the current findings.

Measurement of the Vector and Tensor Asymmetries at Large Missing Momentum in Quasielastic (e[over →],e

We report the measurement of the beam-vector and tensor asymmetries A_{ed}^{V} and A_{d}^{T} in quasielastic (e[over →],e^{'}p) electrodisintegration of the deuteron at the MIT-Bates Linear Accelerator Center up to missing momentum of 500 MeV/c. Data were collected simultaneously over a momentum transfer range 0.1

Hard Two-Photon Contribution to Elastic Lepton-Proton Scattering Determined by the OLYMPUS Experiment.

The OLYMPUS Collaboration reports on a precision measurement of the positron-proton to electron-proton elastic cross section ratio, R_{2γ}, a direct measure of the contribution of hard two-photon exchange to the elastic cross section. In the OLYMPUS measurement, 2.01 GeV electron and positron beams were directed through a hydrogen gas target internal to the DORIS storage ring at DESY. A toroidal magnetic spectrometer instrumented with drift chambers and time-of-flight scintillators detected elastically scattered leptons in coincidence with recoiling protons over a scattering angle range of ≈20° to 80°. The relative luminosity between the two beam species was monitored using tracking telescopes of interleaved gas electron multiplier and multiwire proportional chamber detectors at 12°, as well as symmetric Møller or Bhabha calorimeters at 1.29°. A total integrated luminosity of 4.5 fb^{-1} was collected. In the extraction of R_{2γ}, radiative effects were taken into account using a Monte Carlo generator to simulate the convolutions of internal bremsstrahlung with experiment-specific conditions such as detector acceptance and reconstruction efficiency. The resulting values of R_{2γ}, presented here for a wide range of virtual photon polarization 0.456<ε<0.978, are smaller than some hadronic two-photon exchange calculations predict, but are in reasonable agreement with a subtracted dispersion model and a phenomenological fit to the form factor data.

Guía de práctica clínica para el tratamiento de la diabetes mellitus tipo 2: manejo inicial / Clinical Practice Guideline for Treatment of Type 2 Diabetes Mellitus: Initial Treatment

Introducción: En la actualidad es ampliamente aceptada la metformina como manejo farmacológico inicial para el tratamiento de la diabetes mellitus tipo 2 (DMT2). Resulta, sin embargo, controversial si en algunos tipos de pacientes puede iniciarse tratamiento únicamente con cambios intensivos de estilo de vida o si existen grupos en quienes debería iniciarse desde el inicio terapia farmacológica combinada. Objetivo: Definir el impacto de estrategias de cambio intensivo en la dieta y de ejercicio, así como de la terapia farmacológica con metformina asociada a un segundo antidiabético oral como estrategias de manejo inicial en pacientes con DMT2 recién diagnosticada. Métodos: Se elaboró la guía de práctica clínica, siguiendo los lineamientos de la guía metodológica del Ministerio de Salud y Protección Social colombiano. Se revisó la evidencia disponible de forma sistemática y se formularon las recomendaciones utilizando la metodología GRADE. Conclusiones: En pacientes con DMT2 recién diagnosticada no se recomienda el manejo únicamente con cambios intensivos del estilo de vida; estos deben acompañar el manejo farmacológico con metformina, dando prelación a los componentes de la dieta mediterránea y al ejercicio aeróbico. En los pacientes con DMT2 recién diagnosticada y niveles de HbA1C > 8 % se recomienda utilizar terapia combinada desde el inicio con metformina y otro antidiabético oral, siendo de primera elección los inhibidores de DPP-4.

Introduction: Today, metformin is widely accepted as standard initial pharmacologic treatment for diabetes mellitus type 2 (DMT2). However, it is controversial if in some groups of patients, the treatment can be initiated only with life style changes, or if there are groups who should begin with combined therapy since the beginning. Aim: To define the effect of intensive strategies for change of diet or exercise, and the effect of combined therapy with metformin and a second oral antidiabetic, as initial treatment in patients with newly DMT2. Methods: A clinical practice guide has been developed following the broad outline of the methodological guide from the Colombian Ministry of Health and Social Welfare. with the aim of systematically gathering scientific evidence and formulating recommendations using the GRADE (Grading of Recommendations Assessment, Development and Evaluation) methodology. Conclusions: In patients with recently diagnosed DMT2, initial treatment with lifestyle changes only is not recommended. However, it is recommended that lifestyles changes must begin simultaneously with metformin, including the components of a Mediterranean diet and aerobic exercise. In patients with recently diagnosed DMT2 and HbA1c levels >8%, it is recommended to administer a combined therapy from the beginning with metformin and another oral antidiabetic medication. The DPP4 inhibitor is recommended.

Clinical practice guideline for the prevention, early detection, diagnosis, management and follow up of type 2 diabetes mellitus in adults.

In Colombia, diabetes mellitus is a public health program for those responsible for creating and implementing strategies for prevention, diagnosis, treatment, and follow-up that are applicable at all care levels, with the objective of establishing early and sustained control of diabetes. A clinical practice guide has been developed following the broad outline of the methodological guide from the Ministry of Health and Social Welfare, with the aim of systematically gathering scientific evidence and formulating recommendations using the GRADE (Grading of Recommendations Assessment, Development and Evaluation) methodology. The current document presents in summary form the results of this process, including the recommendations and the considerations taken into account in formulating them. In general terms, what is proposed here is a screening process using the Finnish Diabetes Risk Score questionnaire adapted to the Colombian population, which enables early diagnosis of the illness, and an algorithm for determining initial treatment that can be generalized to most patients with diabetes mellitus type 2 and that is simple to apply in a primary care context. In addition, several recommendations have been made to scale up pharmacological treatment in those patients that do not achieve the objectives or fail to maintain them during initial treatment. These recommendations also take into account the evolution of weight and the individualization of glycemic control goals for special populations. Finally, recommendations have been made for opportune detection of micro- and macrovascular complications of diabetes.

En Colombia la Diabetes Mellitus es un problema de salud pública por lo que deben generarse e implementarse estrategias de prevención, diagnóstico, tratamiento y seguimiento, aplicables en todos los niveles de atención con miras a establecer el control de la diabetes en forma temprana y sostenida. Se elaboró una guía de práctica clínica siguiendo los lineamientos de la guía metodológica del Ministerio de Salud y Protección Social para recolectar de forma sistemática la evidencia científica y formular las recomendaciones utilizando la metodología GRADE. El presente documento muestra, de forma resumida, el resultado de ese proceso, incluyendo las recomendaciones y las consideraciones tenidas en cuenta para llegar a ellas. En términos generales, se propone un proceso de tamización mediante el cuestionario FINDRISC adaptado a población Colombiana que permite llegar a un diagnóstico temprano de la enfermedad y un algoritmo para el manejo inicial que es generalizable a la gran mayoría de los pacientes con diabetes mellitus tipo 2 y que es sencillo de aplicar en atención primaria. También se hacen unas recomendaciones para escalar el tratamiento farmacológico de los pacientes que no alcanzan la meta o la pierden con el manejo inicial, teniendo en cuenta principalmente la evolución del peso y la individualización de la meta de control glucémico en poblaciones especiales. Finalmente se proponen algunas recomendaciones para la detección oportuna de las complicaciones micro y macrovasculares de la diabetes.

Precision Measurement of the Radiative ß Decay of the Free Neutron.

The standard model predicts that, in addition to a proton, an electron, and an antineutrino, a continuous spectrum of photons is emitted in the ß decay of the free neutron. We report on the RDK II experiment which measured the photon spectrum using two different detector arrays. An annular array of bismuth germanium oxide scintillators detected photons from 14 to 782 keV. The spectral shape was consistent with theory, and we determined a branching ratio of 0.00335±0.00005[stat]±0.00015[syst]. A second detector array of large area avalanche photodiodes directly detected photons from 0.4 to 14 keV. For this array, the spectral shape was consistent with theory, and the branching ratio was determined to be 0.00582±0.00023[stat]±0.00062[syst]. We report the first precision test of the shape of the photon energy spectrum from neutron radiative decay and a substantially improved determination of the branching ratio over a broad range of photon energies.

Fiber-based photon-pair source capable of hybrid entanglement in frequency and transverse mode, controllably scalable to higher dimensions.

We have designed and implemented a photon-pair source, based on the spontaneous four wave mixing (SFWM) process in a few-mode fiber, in a geometry which permits multiple, simultaneous SFWM processes, each associated with a distinct combination of transverse modes for the four participating waves. In our source: i) each process is group-velocity-matched so that it is, by design, nearly-factorable, and ii) the spectral separation between neighboring processes is greater than the marginal spectral width of each process. Consequently, there is a direct correspondence between the joint amplitude of each process and each of the Schmidt mode pairs of the overall two-photon state. Our approach permits hybrid entanglement in discrete frequency and in transverse mode, whereby control of the number of supported fiber transverse modes allows scalability to higher dimensions while spectral filtering may be used for straightforward Schmidt mode discrimination.

Clinical practice guideline for the prevention, early detection, diagnosis, management and follow up of type 2 diabetes mellitus in adults / Guía de práctica clínica para la prevención, diagnóstico, tratamiento y seguimiento de la diabetes mellitus tipo 2 en la población mayor de 18 años

In Colombia, diabetes mellitus is a public health program for those responsible for creating and implementing strategies for prevention, diagnosis, treatment, and follow-up that are applicable at all care levels, with the objective of establishing early and sustained control of diabetes. A clinical practice guide has been developed following the broad outline of the methodological guide from the Ministry of Health and Social Welfare, with the aim of systematically gathering scientific evidence and formulating recommendations using the GRADE (Grading of Recommendations Assessment, Development and Evaluation) methodology. The current document presents in summary form the results of this process, including the recommendations and the considerations taken into account in formulating them. In general terms, what is proposed here is a screening process using the Finnish Diabetes Risk Score questionnaire adapted to the Colombian population, which enables early diagnosis of the illness, and an algorithm for determining initial treatment that can be generalized to most patients with diabetes mellitus type 2 and that is simple to apply in a primary care context. In addition, several recommendations have been made to scale up pharmacological treatment in those patients that do not achieve the objectives or fail to maintain them during initial treatment. These recommendations also take into account the evolution of weight and the individualization of glycemic control goals for special populations. Finally, recommendations have been made for opportune detection of micro- and macrovascular complications of diabetes.

En Colombia la Diabetes Mellitus es un problema de salud pública por lo que deben generarse e implementarse estrategias de prevención, diagnóstico, tratamiento y seguimiento, aplicables en todos los niveles de atención con miras a establecer el control de la diabetes en forma temprana y sostenida. Se elaboró una guía de práctica clínica siguiendo los lineamientos de la guía metodológica del Ministerio de Salud y Protección Social para recolectar de forma sistemática la evidencia científica y formular las recomendaciones utilizando la metodología GRADE. El presente documento muestra, de forma resumida, el resultado de ese proceso, incluyendo las recomendaciones y las consideraciones tenidas en cuenta para llegar a ellas. En términos generales, se propone un proceso de tamización mediante el cuestionario FINDRISC adaptado a población Colombiana que permite llegar a un diagnóstico temprano de la enfermedad y un algoritmo para el manejo inicial que es generalizable a la gran mayoría de los pacientes con diabetes mellitus tipo 2 y que es sencillo de aplicar en atención primaria. También se hacen unas recomendaciones para escalar el tratamiento farmacológico de los pacientes que no alcanzan la meta o la pierden con el manejo inicial, teniendo en cuenta principalmente la evolución del peso y la individualización de la meta de control glucémico en poblaciones especiales. Finalmente se proponen algunas recomendaciones para la detección oportuna de las complicaciones micro y macrovasculares de la diabetes.

rs3918242 MMP9 gene polymorphism is associated with myocardial infarction in Mexican patients.

Several studies have demonstrated that matrix metalloproteinases (MMPs) play a major role in atherosclerotic plaque disruption and lead to myocardial infarction (MI). We investigated the association between the MMP1 -1607 1G/2G (rs1799750), MMP3 -1612 5A/6A (rs3025058), and MMP9 -1562 C/T (rs3918242) polymorphisms and the risk of developing MI in a Mexican mestizo cohort. The genotype analysis was performed using the restriction fragment length polymorphism-polymerase chain reaction technique in a group of 236 patients with a history of MI and 285 healthy controls. Similar distributions of rs1799750 and rs3025058 were observed in both groups; however, the MMP9 rs3918242 T allele and the CT genotype were associated with the risk of developing MI (OR = 2.32, pC = 0.02 and OR = 2.40, pC = 0.02, respectively). Multiple logistic analysis was performed between MI patients and controls to estimate the risk, and after adjusting for identified risk factors, the CT + TT genotypes of MMP9 rs3918242 were found to be significantly associated with increased risk of developing MI than those with the CC genotype (OR = 2.88, P < 0.01). In summary, our results reveal that the rs3918242 polymorphism of the MMP9 gene plays a major role in the risk of developing MI.

Coffee's country of origin determined by NMR: the Colombian case.

The determination of the origin of coffee beans by NMR fingerprinting has been shown promising and classification has been reported for samples of different countries and continents. Here we show that this technique can be extended and applied to discriminate coffee samples from one country against all others, including its closest neighbors. Very high classification rates are reported using a large number of spectra (>300) acquired over a two-year period. As original aspects it can be highlighted that this study was performed in fully automatic mode and with non-deuterated coffee extracts. This is achieved using a series of experiments to procure a robust suppression of the solvent peaks. As is, the method represents a cost effective opportunity for countries to protect their national productions.